НИИ ФХП БГУ

Research Institute for Physical Chemical Problems
of the Belarusian State University

Laboratory of physicochemical investigations

  

Лаборатория физико-химических методов исследования 
 





The laboratory was established in 2002. The Head of the laboratory is L. Ivashkevich, Ph. D., Associate professor.


  Directions of the research activity:
  •  x-Ray diffraction investigations of molecular and crystal structures of organic and inorganic compounds using both single crystals and powders;
  •  investigation of physicochemical processes of spontaneous and directed nanostructuring of silicon single crystal surfaces.



Main achievements:
  • crystal and molecular structure of more than 100 tetrazole derivatives has been determined, which represent complexes of tetrazoles with transition metals, substituted tetrazoles and tetrazolium salts:
- complete characteristic of crystal structure of the compounds (metric data, bond lengths, valency and torsion angles, coordination polyhedras,
packing of the molecules in the crystal, the system of hydrogen bonds and others) has been obtained,
- new ways of coordination of ligands have been identified and their relation to with the nature of the ligands has been established,
- ability of 1,5 - dialkiltetrazols to bridging coordination through the tetrazole cycle has been discovered,
- effect of differences in coordination properties inherent to 1H- and 2H- isomers of substituted tetrazols on the structure of coodinating compounds have been studied,
- influence of the nature of the tetrazole cycle substituents on the character of the crystal complex architecture has been investigated,
- spin state of iron(II) and cobalt(II) in complexes has been investigated on the basis of X-ray data,
- methodology of structural investigations of complexes by a powder diffraction method which permitted to establish the structure of a significant number of poorly-crystallizing compounds has been developed;
  • crystal and molecular structure of 50 biologically active compounds (steroids, homogonanes etc.) has been established;
  • a set of experimental and technological equipment to investigate regularities of nanomorphology transformation of solid surfaces in various physicochemical conditions has been created.

  

Developments:
  •   method of complete X-ray analysis of crystalline substances implemented into the practice of scientific research;
  •   a set of programs «Diamond» assighned for the computer simulation of the process of diamond type single crystals dissolution.

Main publications:
 
I. Crystal structure of azoles
 
  1. S. V. Voitekhovich, A. S. Lyakhov, L. S. Ivashkevich, F. Schleife,R. Schnorr, B. Kersting, P. N. Gaponik. Synthesis and characterization of 5-amino-1,3-di-tert-butyl-2H-tetrazol-1-ium bis[di-m-chlorido-bis[dichloridocuprate(II)]] // Inorg. Chim. Acta. 2014. Vol. 419. P. 124–129.
  2. V. I. Potkin,S. K. Petkevich, A. S. Lyakhov, L. S. Ivashkevich. Mononuclear heterocyclic rearrangement of 5-arylisoxazole-3-hydroxamic acids into 3,4-substituted 1,2,5-oxadiazoles // Synthesis. 2013. Vol. 45 (N 2). P. 260–264.
  3. T. V. Serebryanskaya, T.Yung, A. A. Bogdanov, A. Schebet, S. Johnsen, A. S. Lyakhov, L. S. Ivashkevich, Zh. A. Ibrahimava, T. S. Garbuzenco, T. S. Kolesnikova, N. I. Melnova, P. N. Gaponik, O. A. Ivashkevich. Synthesis, Characterization, and Biological Evaluation of New Tetrazole-based Platinum(II) and Palladium(II) Chlorido Complexes – Potent Cisplatin Analogues and their Trans Isomers // J. Inorg. Biochem. 2013. Vol. 120. P. 44–53. 
  4. MosalkovaA.P., VoitekhovichS.V., LyakhovA.S., IvashkevichL.S., LachJ., KerstingB., GaponikP.N., IvashkevichO.A. 2-tert-Butyl-5-(2-pyridyl)-2H-tetrazole as Chelating Ligand in Direct Synthesis of Novel Cu(II) and Heterobimetallic Cu(II)/Mn(II) Complexes // DaltonTransactions. 2013. Vol. 42. P. 2985–2997. 
  5. Voitekhovich S.V., Lyakhov A.S., Ivashkevich L.S., GaponikP.N.  Facile Synthesis of Macrocyclic Tetrazoles by Regioselective Cycloalkylation of Bistetrazoles with 2,5-Dimethylhexane-2,5-diol in Perchloric Acid// Tetrahedron Letters. 2012. Vol. 53. P. 6111–6114.
  6. Voitekhovich S.V., Filippova J.V., Sukhanova A.G., Lyakhov A.S., Ivashkevich L.S., Sukhanov G.T., Grigoriev Y.V. Selective Complexation of1-Ethyl-5-nitro-1,2,3-triazole(entz) with Copper(II) Salts: Preparation and Characterization of [Cu(entz)2Cl2] and [Cu(entz)4(H2O)2](ClO4)2  // Inorganic Chemistry Communications. 2012. Vol. 24. P. 77–80.
  7. Degtyarik M.M., Lyakhov A.S., Ivashkevich L.S., Voitekhovich S.V., Sukhanov G.T., Grigoriev Y.V. 1-(2-Hydroxyethyl)-3-nitro-1,2,4-triazole and Its Complexes with Copper(II) Chloride and Copper(II) Perchlorate // Zeitschrift für Anorganische und Allgemeine Chemie. 2012. Vol. 638. P. 950–956.
  8. Voitekhovich S.V., Lyakhov A.S., Ivashkevich L.S., Matulis V.E., Grigoriev Y.V., Gaponik P.N., Ivashkevich O.A. Regioselective alkylation of amino- and mercapto-1,2,4-triazoles with t-BuOH-HClO4 // Tetrahedron. 2012. Vol. 68. p. 4962–4966.
  9. Ivashkevich L.S., Lyakhov A.S., Serebryanskaya T.V., Gaponik P.N., Ivashkevich O.A. An X-ray powder study of the structure and microstructure of trans-dichloridobis(1,5-diamino-1H-tetrazole-kN4)palladium(II) // Zeitschrift für Kristallographie. 2012, Vol. 227, P. 702–709.
  10. DegtyarikM.M., LyakhovA.S., IvashkevichO.A., GrigorievY.V.Complexes of Co(II), Ni(II), and Cu(II) Chlorides and Bromides with Tetrazol-1-yl-Tris(hydroxymethyl)methane: Synthesis and Structure//Russian Journal of Coordination Chemistry. 2012. Vol. 38. P. 77–85.
  11. MosalkovaA.P., VoitekhovichS.V., LyakhovA.S.,  IvashkevichL.S., GaponikP.N., IvashkevichO.A. Direct Synthesis and Characterization of a New Copper(II) and Zinc(II) 5-R-Tetrazolato Complexes [R = Me, Ph, 4-Py] with Ethylenediamine and DMSO as Coligands // Zeitschrift für Anorganische und Allgemeine Chemie. 2012. Vol. 638. P. 103–110.
  12. VoitekhovichS.V., LyakhovA.S., IvashkevichL.S., GaponikP.N. Acid-mediated Cycloalkylation of C-Aminoazoles with 2,5-Dimethylhexane-2,5-diol // Tetrahedron Letters. 2012. Vol. 53. P. 419–421.
  13. Ivashkevich L.S., Serebryanskaya T.V., Lyakhov A.S., Gaponik P.N. An X-ray powder diffraction study of cis-dichloridobis(2-methyl-2H-tetrazol-5-amine-κN4)platinum(II), a tetrazole-containing analogue of cisplatin // Acta Crystallographica. 2011. Vol. C67. P. m195–m198.
  14. SerebryanskayaT.V., IvashkevichL.S., LyakhovA.S., GaponikP.N., IvashkevichO.A. 1,3-Bis(2-alkyltetrazol-5-yl)triazenes and their Fe(II), Co(II) and Ni(II) complexes: Synthesis, spectroscopy, and thermal properties. Crystal structure of Fe(II) and Co(II) 1,3-bis(2-methyltetrazol-5-yl) 
    triazenide complexes// Polyhedron. 2010. Vol.29. P. 2844–2850.
  15. Voitekhovich S.V., Serebryanskaya T.V., Gaponik P.N., Ivashkevich L.S., Lyakhov A.S., Ivashkevich O.A. Preparation and Characterization of the First Coordination Compounds of Tetrazol-2-ylacetic Acid // Inorganic Chemistry Communications. 2010. Vol. 13. P. 949–951.
  16. 55.   Serebryanskaya T.V., Matulis V.E., Lyakhov A.S.,  Voitekhovich S.V., Gaponik P.N., Ivashkevich O.A. N-Substituted Bis(tetrazol-5-yl)diazenes: Synthesis, Spectra, X-ray Molecular and Crystal Structures, and Quantum-Сhemical DFT Calculations// Heteroatom Chemistry. 2010. Vol. 21. P.  24–35.
  17.  Ivashkevich L.S., Lyakhov A.S.,  Mosalkova A.P., Gaponik P.N., Ivashkevich O.A. Copper(II) chloride and bromide complexes with 2-methyl-2H-tetrazol-5-amine: an X-ray powder diffraction study // Acta Crystallographica. 2010. Vol. C66. P. m114–m117.
  18. Lyakhov A.S., Voitekhovich S.V., Ivashkevich L.S., Gaponik P.N. A Tetrazol-5-yl Analogue of Glycine, 5-Ammoniomethyl-1H-tetrazolide, and Its Copper(II) Complex // Acta Crystallographica. 2010. Vol. C66. P. m22–m25.
  19. MosalkovaA.P., VoitekhovichS.V., LyakhovA.S., IvashkevichL.S., DegtyarikM.M., GaponikP.N., IvashkevichO.A. Direct Synthesis and Characterization of Novel Homo- and Heterometallic Mixed-Ligand Tetrazolate Complexes, Cu(en)(tz)2 and Cu(en)2Zn(tz)4 [en = Ethylenediamine, tz = Tetrazolate] // Inorganic Chemistry Communications. 2009. Vol. 12. P. 998–1000.
  20. LyakhovA.S., MosalkovaA.P., DegtyarikM.M., IvashkevichL.S., GaponikP.N. trans-Dichloridotetrakis[1-(2-hydroxyethyl)-1H-tetrazole-kN4]cobalt(II)// Acta Crystallographica. 2009. Vol.E65. P. m1397–m1435.
  21. IvashkevichO.A., MatulisV.E., LyakhovA.S., GrigorievaI.M., GaponikP.N., SukhanovG.T., Filippova Y.V., SukhanovaA.G. Selective Synthesis of 1,3-Dialkyl-4-Nitro-1,2,3-Triazolium Salts From 1-Alkyl-4-Nitro-1,2,3-Triazoles And Dialkyl Sulfates // Chemistry of Heterocyclic Compounds. 2009. Vol. 45. P. 1218–1225.
  22. 49.   IvashkevichL.S., LyakhovA.S., MosalkovaA.P., GaponikP.N., IvashkevichO.A. catena-Poly[cobalt(II)-di-μ-chlorido-κ4Cl:Cl-μ-1,5-dimethyl-1H-tetrazole-κ2N3:N4]: an X-ray powder investigation// Acta Crystallographica. 2009. Vol. E65. P. m236.
  23. 50.   IvashkevichL.S., LyakhovA.S., DegtyarikM.M., EfimovV.V., GaponikP.N., TiutiunnikovS.I., VoitekhovichS.V., IvashkevichO.A., YusupovR.V., TrotsD.M., SikolenkoV.V. Neutron and Synchrotron X-Ray Powder Study of Copper(II) Chloride Complex with Deuterated1-Ethyltetrazole// Zeitschrift für Kristallographie. 2009. Vol. 224. P. 233–239.
  24. VoitekhovichS.V., GaponikP.N., LyakhovA.S., FilipovaJ.V., SukhanovaA.G., SukhanovG.T., IvashkevichO.A. N-Alkylation of 4-Nitro-1,2,3-triazole Revisited. Detection and Characterization of the N3-Ethylation Product, 1-Ethyl-5-nitro-1,2,3-triazole // Tetrahedron Letters. 2009. Vol. 50. P. 2577–2579.
  25. VoitekhovichS.V., SerebryanskayaT.V., LyakhovA.S., GaponikP.N., IvashkevichO.A. Copper(II), Palladium(II) and Platinum(II) Chloride Complexes with 5-Amino-2-tert-butyltetrazole: Synthesis, Characterization and Cytotoxicity // Polyhedron. 2009. Vol. 28. P. 3614–3620/
  26. Voitekhovich S.V., Gaponik P.N., Lyakhov A.S., Ivashkevich O.A. Endo- and Exocyclic N-Alkylation of 1- and 5-Aminotetrazoles with t-BuOH-HClO4: Synthesis of Mono-, Di- and Tri-tert-butylsubstituted Aminotetrazolium Salts // Tetrahedron. 2008. Vol. 64. P. 8721–8725.
  27. Lyakhov A.S., Vorobiov A.N., Ivashkevich L.S., Gaponik P.N. Two derivatives of 1,5-disubstituted tetrazoles: 1-(4-nitrophenyl)-1H-tetrazol-5-amine and {(E)-[1-(4-ethoxyphenyl)-1H-tetrazol-5-yl]iminomethyl}dimethylamine // Acta Crystallographica. 2008. Vol. C64. P. o414–o416.
  28. Ivashkevich L.S., Lyakhov A.S., Serebryanskaya T.V., Gaponik P.N. catena-Poly[[bis[1-(2-hydroxyethyl)-1H-tetrazole-κN4]copper(II)]-di-μ-chlorido]: a powder study // Acta Crystallographica. 2008. Vol. E64. P. m1044.
  29. Ivashkevich L.S., Kuz’min A.Y., Kochubei D.I., Kriventsov V.V., Shmakov A.N., Lyakhov A.S., Efimov V.V., Tyutuynnikov S.I., Ivashkevich O.A. Investigation of Polycrystalline Copper(II) Chloride-1.5-Dimethyltetrazole Complex Compound with X-ray Absorption Spectroscopy // Journal of Surface Investigation-X-Ray Synchrotron and Neutron Techniques, 2008, Vol. 2, pp. 641-645.
  30. Lyakhov A.S., Matulis V.E., Gaponik P.N., Voitekhovich S.V., Ivashkevich O.A. 1-Vinyl-5-amino-1H-tetrazole: X-Ray Molecular and Crystal Structures and Quantum-Chemical DFT Calculations // Journal of Molecular Structure. 2008. Vol. 876. P. 260–267.
  31. Lyakhov A.S., Grigoriev Y.V., Ivashkevich L.S., Gaponik P.N. Potassium 2-(1H-tetrazol-1-yl)ethanesulfonate // Acta Crystallographica. 2007. Vol. E63. P. m495–m497.
  32. Lyakhov A.S., Grigoriev Y.V., Ivashkevich L.S., Gaponik P.N. 2-(1H-Tetrazol-1-yl)ethanol// Acta Crystallographica. 2007. Vol. E63. P. o1573–o1574.
  33. Lyakhov A.S., Egorova N.G., Artomonova T.V., Gaponik P.N., Koldobskii G.I. 1-[1-(4-Nitrophenyl)-1H-tetrazol-5-yl]-1H-1,2,3-benzotriazole// Acta Crystallographica. 2007. Vol. E63. P. o2486–o2487.
  34. Lyakhov A.S., Zatsepina M.V., Artomonova T.V., Gaponik P.N., Koldobskii G.I. Tetrakis[(1-phenyltetrazol-5-yl)sulfanylmethyl]methane // Acta Crystallographica. 2007. Vol. E63. P. o1145–o1147.
  35. Lyakhov A.S.,  Egorova N.G., Artomonova T.V., Gaponik P.N., Koldobskii G.I. 5-Mesylmethoxy-1-(4-nitrophenyl)tetrazole// Acta Crystallographica. 2006. Vol. E62. P. o903–o905.
  36. Lyakhov A.S., T.V. Serebranskaya, Gaponik P.N., Voitekhovich S.V., Ivashkevich L.S. Bis(1-methyl-1H-tetrazol-5-yl)diazene and Two Its Copper(I) Chloride Complexes Poly[[[μ-1,2-bis(1-methyl-1H-tetrazol-5-yl)diazene-k4N',N4:N,N4']-dicopper(I)]-di-μ-chloro] and Catena-poly [[chlorocopper(I)]-μ-1,2-bis(1-methyl-1H-tetrazol-5-yl)diazene-k4N',N4:N,N4'] // Acta Crystallographica. 2006. Vol. C62. P. m223–m226.
  37. Ivashkevich L.S., Lyakhov A.S., Gaponik P.N., Degtyarik M.M., Ivashkevich O.A., Tiutiunnikov S.I., Efimov V.V. An X-Ray Powder Investigation of catena-poly[copper(II)-di-μ-chloro-k41:2Cl-μ-1,5-dimethyl-1H-tetrazole-k2N3:N4]// Acta Crystallographica. 2006. Vol. C62. P. m607–m609.
  38. Ivashkevich L.S., Lyakhov A.S., Degtyarik M.M., Gaponik P.N. An X-ray Powder Diffraction Study of catena-Poly[[bis(1-methyl-1H-tetrazole-kN4)copper(II)]-di-μ-bromo] // ActaCrystallographica. 2005. Vol. E61. P. m394–m396.
  39. Lyakhov A.S.,  Degtyarik M.M., Ivashkevich L.S., Gaponik P.N. Coordination polymers formed by bridging 2-substituted tetrazole ligands: poly[[dichlorocopper(II)]-di-μ2-2-propyl-2H-tetrazole-k2N1:N4] and poly[[dichlorocopper(II)]-di-μ2-2-allyl-2H-tetrazole- k2N1:N4] // Acta Crystallographica. 2005. Vol. C61. P. m158–m160.
  40. Gaponik P.N., Voitekhovich S.V., Lyakhov A.S., Matulis Vad.E., Ivashkevich O.A., Quesada M., Reedijk J. Crystal Structure and Physical Properties of the New 2D Polymeric Compound Bis(1,5-Diaminotetrazole)Dichlorocopper(II) // Inorganica Chimica Acta. 2005. Vol. 358. P. 2549–   2557.
  41. Lyakhov A.S.,  Voitekhovich S.V., Ivashkevich L.S., Gaponik P.N. 5-Amino-1-methyl-4H-tetrazolium Picrate// Acta Crystallographica. 2005. Vol. E61. P. o3645–o3647.
  42. Gaponik P.N., Degtyarik M.M., Lyakhov A.S., Matulis Vad.E., Ivashkevich O.A., Quesada M., Reedijk J. Bis(2-methyltetrazole)dichlorocopper(II) is a Layered Coordination Polymer Built from Dinuclear Chloro-Bridged Cu Units Linked by Bridging Tetrazoles. The First Structurally and Magnetically Characterized Complex of 2-Monosubstituted Tetrazoles // Inorganica Chimica Acta. 2005. Vol. 358. P. 3949–3957.
  43. Lyakhov A.S., Gaponik P.N., Degtyarik M.M., Ivashkevich L.S. catena-Poly[[(2-hexyl-2H-tetrazole- kN4)copper(II)]-di-μ-chloro] // Acta Crystallographica. 2005. Vol. E61. P. m183–m186. 
  44. Lyakhov A.S.,  Voitekhovich S.V., Gaponik P.N., Ivashkevich L.S. 1-Phenyl-5-(piperidinomethyl)-1H-tetrazole// Acta Crystallographica. 2004. Vol. C60. P. o293–o294.
  45. Ivashkevich D.O., Lyakhov A.S., Degtyarik M.M., Gaponik P.N. catena-Poly[[[cis-bis(1-phenyltetrazole-kN4)copper(II)]-di-μ-chloro]hemi(1-phenyltetrazole)].// Acta Crystallographica. 2004. Vol. C60. P. m368–m370.
  46. Lyakhov A.S., Gaponik P.N., Degtyarik M.M., Ivashkevich L.S. Hexa-μ2-chloro-μ4-oxo-tetrakis[(2-ethyltetrazole-kN4)copper(II)] // Acta Crystallographica. 2004. Vol. C60. P. m399–m401.
  47. Lyakhov A.S., Gaponik P.N., Pytleva D.S., Voitekhovich S.V., Ivashkevich L.S. Bis[1,3-bis(2-methyltetrazol-5-yl-k2N4)triazenido-kN2]nickel(II) //Acta Crystallographica. 2004. Vol. C60. P. m421–m422.
  48. Lyakhov A.S., Vorobiov A.N., Gaponik P.N., Ivashkevich L.S., Matulis Vad. E., Ivashkevich O.A. Two Derivatives of 5-Aminotetrazole: 5-Amino-1-phenyltetrazole and 5-Amino-1-(1-naphthyl)tetrazole // Acta Crystallographica. 2003. Vol. C59. P. o690 –o693.
  49. Lyakhov A.S., Voitekhovich S.V., Gaponik P.N., Ivashkevich L.S. Zwitterionic 5-(1-Piperidiniomethyl)tetrazolide // Acta Crystallographica. 2003. Vol. C59. P. o22–o23.
  50. Ivashkevich D.O., Lyakhov A.S., Degtyarik M.M., Gaponik P.N.  Chain Structure of catena-Poly[[bis[cis-1-(2,4,6-trimethylphenyl)tetrazole-kN4)copper(II)]-di-μ-chloro] // Acta Crystallographica. 2003. Vol. E59. P. m14–m16.
  51. Lyakhov A.S., Gaponik P.N., Degtyarik M.M., Ivashkevich L.S. The Chain Ctructure of catena-Poly[[(2-tert-butyltetrazole-kN4)copper(II)]-di-μ-chloro] // Acta Crystallographica. 2003. Vol. E59. P. m38–m40.
  52. Lyakhov A.S., Gaponik P.N., Degtyarik M.M., Matulis Vad.E., Matulis Vit.E., Ivashkevich L.S. catena-Poly[[tetrakis(2-allyltetrazole-kN4)-tetra-μ-chloro-tricopper(II)]-di-μ-chloro] // Acta Crystallographica. 2003. Vol. C59. P. m90–m92.
  53. Lyakhov A.S., Gaponik P.N., Degtyarik M.M., Ivashkevich L.S. The Layered Structure of Poly[[di-μ-chloro-bis[chloro(2-ethyltetrazole-kN4)copper(II)]]-di-μ-2-ethyltetrazole-k2N1:N4] // Acta Crystallographica. 2003. Vol. C59. P. m204–m206.
  54. Ivashkevich D.O., Lyakhov A.S., Pytleva D.S., Voitekhovich S.V., Gaponik P.N. catena-Poly-[[bis-[μ-1,2-bis-(1-methyltetrazol-5-yl)ethane-k2N4:N4']-bis-[chlorocopper(II)]]-di-μ-chloro] //Acta Crystallographica. 2003. Vol. C59. P. m221–m223. 
  55. Lyakhov A.S., Voitekhovich S.V., Gaponik P.N., Ivashkevich L.S. Non-linear Optical Crystals of 2,2,3-Trimethyl-3-(1H-1,2,3,4-tetrazol-5-yl)butanenitrile // Acta Crystallographica. 2003. Vol. C59. P. o388–o389. 
  56. Ivashkevich D.O., Lyakhov A.S., Gaponik P.N., Grigoriev Y.V., Ivashkevich L.S. Bis(5-phenyltetrzol-2-yl)methane // Acta Crystallographica. 2002. Vol. C58. P. 381–383.
  57. Ivashkevich D.O., Lyakhov A.S., Degtyarik M.M., Gaponik P.N. catena-Poly[bis(cis-1-tert-butyl-tetrazole-kN4)copper(II)]-di-μ-chloro] // Acta Crystallographica. 2002. Vol. C58. P. m288–m289.
  58. Ivashkevich D.O., Lyakhov A.S., Voitekhovich S.V., Gaponik P.N. Dichloro[N,N-dimethyl-1-(1-methyl-1H-tetrazol-5-yl-kN4)methanamine-kN]copper(II) // Acta Crystallographica. 2002. Vol. C58. P. m563–m564.
  59. Voitekhovich S.V., Gaponik P.N., Pytleva D.S., Lyakhov A.S., Ivashkevich O.A. Regioselective Synthesis of New Chelating Bistetrazole Ligands and Study of Their Copper(II) Complexes // Polish Journal of Chemistry. 2002. Vol. 76, No. 10. P.1371–1380.
  60. LyakhovA.S., GaponikP.N., VoitekhovichS.V., IvashkevichL.S., KulakA.A., IvashkevichO.A. 2-(1H-Tetrazol-1-yl)benzoic Acid // ActaCrystallographica. 2001. Vol. C57. P. 1436–1437.
  61. LyakhovA.S., GaponikP.N., VoitekhovichS.V., IvashkevichD.O., PytlevaD.S., IvashkevichL.S. [1,5-Bis(1-methyl-1H-tetrazol-5-yl-kN)-3-oxopentane-kO]dichlorocopper(II) // ActaCrystallographica. 2001. Vol. C57. P. 1374–1375.
  62. LyakhovA.S., GaponikP.N., VoitekhovichS.V., IvashkevichL.S., KulakA.A. 4-Nitro-2-(1H-tetrazol-1-yl)phenol // Acta Crystallographica. 2001. Vol. C57. P. 1204–1206.
  63. VoitekhovichS.V., GaponikP.N., LyakhovA.S., IvashkevichO.A. Synthesis and Structure of 1-tert-Butyl-3-R-tetrazolium Salts // Chemistry of Heterocyclic Compounds. 2001. Vol. 37, No. 8. P. 949–959.
  64. Voitekhovich S.V., Gaponik P.N., Lyakhov A.S., Ivashkevich O.A. Synthesis and Transformation of 1-Monosubstituted Tetrazoles to Pyrimidinones, Benzoxazoles and Quinazolinediones Through 1,4-Disubstituted Tetrazolium Salts //Polish Journal of Chemistry. 2001. Vol. 75, No. 2.   P. 253–264.
  65. Ivashkevich D.O., Lyakhov A.S., Gaponik P.N., Bogatikov A.N., Govorova A.A. Layered Structure of catena-Poly[[bis[1-(2-azidoethyl)-tetrazole-N4-copper(II)]-[di-μ-chloro] // Acta Crystallographica. 2001. Vol. E57. P. m335–m337.
  66. Lyakhov A.S., Gaponik P.N., Voitekhovich S.V. 1,5-Diamino-1H-1,2,3,4-tetrazole// Acta Crystallographica, 2001, Vol. C57, pp. 185-186.
  67. Gaponik P.N., Voitekhovich S.V., Lyakhov A.S. Selective Synthesis of Binuclear N-Substituted Tetrazoles and Tetrazolium Salts// Chemistry of Heterocyclic Compounds. 2000. Vol. 36, No. 3. P. 326–333.
  68. Lyakhov A.S.,  Ivashkevich D.O., Gaponik P.N., Grigoriev Y.V., Ivashkevich L.S. 1-(2,4,6-Trimethylphenyl)-1H-1,2,3,4-tetrazole// Acta Crystallographica. 2000. Vol. C56. P. 256–257.
  69. Gaponik P.N., Voitekhovich S.V., Lyakhov A.S., Maruda I.I. Regioselective Synthesis of New Functionally Substituted Tetrazolium Salts// Chemistry of Heterocyclic Compounds. 1999. Vol. 35, No. 9. P. 1078–1084.
  70. Gaponik P.N., Voitekhovich S.V., Ivashkevich O.A., Lyakhov A.S., Govorova A.A.Synthesis and Properties of Alkyl- and Phenyltetrazolium Picrates // Chemistry of Heterocyclic Compounds. 1998. Vol. 34, No. 5. P. 579–586.
 
II. Crystal structure of inorganic phosphates
  1. L.S.Ivashkevich, A.S.Lyakhov, A.F.Selevich. Preparation and structure of the yttrium phosphate dihydrate YPO4·2H2O // Phosphorus Res. Bull. 2013. Vol. 28. P. 45–50. 
  2. Ivashkevich L.S., Selevich A.F., Lyakhov A.S. Crystal structure of layered triphosphate MnH2P3O10·2H2O // Ceramic Transactions. 2012, Vol. 233. P. 45–50.
  3. Ivashkevich L.S., Abramovich E.A., Selevich A.F., Lyakhov A.S. The crystal structure of VNH4HP3O10 // Ceramic Transactions. 2012. Vol. 233. P. 51–56.
  4.  Ivashkevich L.S., Lyakhov A.S., Selevich A.F. X-ray powder diffraction investigation of the faulted crystal structure of MnH2PO10 · 2H2O // Zeitschrift fur Kristallographie. 2012. Vol. 227.  P. 334–340.
  5.  Ivashkevich L.S., Lyakhov A.S., Selevich A.F. The restrained Rietveld refinement of modulated trivalent metal polyphosphates M(PO3)3. // Zeitschrift fur Kristallographie. 2010. Vol. 225. P. 302–308.
  6. Ivashkevich L.S., Lyakhov A.S., Selevich A.F. Crystal Structure of Gallium and Chromium Salts Belonging to the Family MIIIH2P3O10·2H2O (Form I) // Phosphorus Research Bulletin. 2010,.Vol. 24. P. 6–11.
  7. Ivashkevich L.S., Selevich A.F., Lesnikovich A.I., Lyakhov A.S. Powder diffraction study of Ba(NH4)4(PO3)6 // Acta Crystallographica. 2007. Vol. E63.  P. i16–i18.
  8. Ivashkevich L.S., Selevich K.A., Lyakhov A.S., Selevich A.F. TIHP2O7: Structure determination from X-ray powder diffraction data // Acta Crystallographica. 2007. Vol. E 63.  P. i38–i40.
  9. Ivashkevich L.S., Selevich K.A., Lesnikovich A.I., Selevich A.F. X-ray powder diffraction study of LiCrP2O7 //  Acta Crystallographica. 2007. Vol. E63. P. i70–i72.
  10. Selevich K.A., Ivashkevich L.S., Selevich A.F., Lesnikovich A.I. Crystal structure of Iron(III) hydrogen diphosphate FeHP2O7 // Russian Journal of Inorganic Chemistry. 2007. Vol. 52.  P. 1125–1130     
  11. Ivashkevich L.S., Selevich A.F., Lyakhov A.S., Lesnikovich A.I.   Crystal structures of Ti(NH4)2P4O13 and Sn(NH4)2P4O13 // Russian Journal of Inorganic Chemistry. 2007. Vol. 52. P. 1274–1279.
  12. Ivashkevich L.S., Selevich K.A., Lesnikovich A.I., Selevich A.F., Lyakhov A.S.Two isostructural manganese(III) diphosphates, acid α-MnHP2O7 and double MnLiP2O7: Crystal structure determination from X-ray powder diffraction data // Zeitschrift fur Kristallographie. 2006. Vol. 221. P. 115–121.
  13. Selevich K.A., Ivashkevich L.S., Selevich A.F. Crystal structures of CrH2P3O10 and InH2P3O10 // Russian Journal of Inorganic Chemistry. 2006. Vol. 51. P. 1565–1570.
  14. Ivashkevich L.S., Lyakhov A.S., Selevich A.F., Lesnikovich A.I. Crystal structure determination of Ga3(H3O)H8(PO4)6 H2O from X-ray powder diffraction data // Zeitschrift fur Kristallographie. 2004. Vol. 219. P. 267–271.
  15. Ivashkevich L.S., Lyakhov A.S., Selevich A.F., Lesnikovich A.I. Crystal structure determination of In3(H3O)(H2PO4)2·4 H2O from X-ray powder diffraction // Zeitschrift fur Kristallographie. 2004. Vol. 219. P. 543–547.
  16. Ivashkevich L.S., Shul'ga N.V., Lyakhov A.S. Orthorhombic modification of CuNH4PO4·H2O: Synthesis and crystal structure // Russian Journal of Inorganic Chemistry. 2004. Vol. 49.  P. 685–689.
  17. Ivashkevich L.S., Lyakhov A.S., Selevich A.F., Lesnikovich A.I. Ab initio structure determination of In2H2(P2O7)(P4O12) from X-ray powder diffraction data //  Zeitschrift fur Kristallographie. 2003. Vol. 218. P. 32–36. 
  18. Ivashkevich L.S., Lyakhov A.S., Selevich A.F., Petrusevich Yu.I. The crystal structure of Er(HPO4)(NO3)·3H2O: Ab initio determination from x-ray powder diffraction data // Zeitschrift fur Kristallographie. 2003. Vol. 218 (7). P. 475–479.
  19. Ivashkevich L.S., Lyakhov A.S., Selevich A.F., Ilieva D., Lesnikovich A.I. The crystal structure of Y2P4O13 from X-ray powder diffraction data // Zeitschrift fur Kristallographie. 2002. Vol. 217 (11).  P. 605–608.
  20. Selevich A.F., Ivashkevich L.S., Lyakhov A.S., Kovaleva T.B., Lesnikovich A.I. Synthesis and Characterization of LnHPO4(NO3)·3H2O (Ln = Er–Lu), a New Family of Phosphate-Nitrates // Phosphorus Research Bulletin, 2002. Vol. 13, P. 221–226.
  21. Selevich K.A., Ivashkevich L.S., Selevich A.F., Lyakhov A.S. Structure refinement for Na2H2P2O7 from X-ray powder diffraction data // Russian Journal of Inorganic Chemistry. 2002. Vol. 47(10). P. 1533–1536.
  22. Ivashkevich L.S., Selevich K.A., Lyakhov A.S., Selevich A.F., Petrusevich Yu.I. The crystal structure of Na3HP2O7·H2O from X-ray powder diffraction data // Zeitschrift fur Kristallographie. 2002.  Vol. 217. P. 73–77.  
  23. Ivashkevich L.S., Lyakhov A.S., Shulga N.V., Trifonov, V.A. The crystal structure of CuNH4PO4 · H2O from X-ray powder diffraction data //   Zeitschrift fur Kristallographie. 2000. Vol. 215 (4). P. 231–234.
  24. Lyakhov A.S., Selevich A.F., Ivashkevich L.S. GaH3(PO4)2 · 4H2O: Synthesis and Crystal Structure //  Russian Journal of Inorganic Chemistry. 1997. Vol. 42 (1). P. 1–4. 
 
III. Investigations of silicon single crystalssurface 
  1. Yukhnevich A.V. Monte-Carlo simulation of anisotropic etching of single-crystal silicon./ A.V. Yukhnevich, I.A. Mayer, A.E. Usenka.//6-th International Conference on Chemistry and Chemical Education (Sviridov Readings 2012), Minsk, Belarus, 9–13 April, 2012, Book of Abstracts. Minsk: Publishing Center of BSU. 2012. P. 36.
  2. Usenka A. E., Yukhnevich A. V.  Some features of a microdefect revealing in single-crystal silicon by the preferential etching technique // Physica B: Condensed matter. 2009. Vol. 404. P.4657–4660.
  3. Usenko A. E., Yukhnevich A. V.  Anisotropic Dissolution of Single-Crystal Silicon near the Chemical Mask Edge on the (001) Surface // Journal of Surface Investigation. X-ray Synchrotron and Neutron Techniques. 2009. Vol. 3. C.627–633.
  4. A.E. Usenka, A.V. Yukhnevich. Features of Silicon Anisotropic Etching in Aqueous KOH Solutions // Physics, Chemistry and Aplication of Nanostructures: Proceedings of the International Conference “NANOMEETING-2009”. 2009. P. 495–498.
  5. Usenka A. E.., Yukhnevich A. V. Micro- and nanorelief formation of (001) silicon single-crystal treated with aqueous KOH solutions // 4-th International Conference on Chemistry and Chemical Education “Sviridov Readings 2008”. Book of Abstracts. Minsk: Krasico-Print, 2008.  P. 37.
  6. Khizhnyak E. A., Yukhnevich A. V.  Specific Features of Etching of the (001) Surface of Single-crystalline Silicon in KOH-based Solutions // Russian Journal of General Chemistry. 2007. Vol.  77, P. 1315–1318.
  7. Yukhnevich A. V.  Towards a Silicon Laser Based on Emissive Structural Defects // Solid-state electronics.  2007. Vol. 51, P. 489–492.
  8. Usenko A. E., Yukhnevich A. V.  Surface morphology of silicon single crystals treated with acid polishing etchants// Russian Journal of General Chemistry.  2007. Vol.  77.  P. 367–370.
  9. Yukhnevich A. One way to realization of a silicon laser // Physics, chemistry and aPlication of nanostructures: Proceedings of the International conference "NANOMEETING-2007". – World Scientific, 2007. P.574–577.
  10. Yukhnevich A.V. Determination of oxygen and carbon in silicon monocrystals by radiative-luminescent method // The International Conference “Micro- and nanoelectronics – 2005” (ICMNE-2005) : Abstracts. 2005.  Zvenigorod, Moscow region, Russia. P.03/26.
  11. Yukhnevich A.V. Radiative-luminescent method to determine oxygen and carbon in silicon monocrystals // 11th International Conference on Defects – Recognition, Imaging and Physics in Semiconductors (DRIP XI): Book of Abstracts. 2005. Beijing, China. P. 2/21.
  12. Yukhnevich A.V. Some features of detecting of defects in silicon monocrystals by preferential etching method //The 10th International Conference on Extended Defects in Semiconductors “EDS 2004”: Abstracts. 2004. Chernogolovka, Russia. P.124.
  13. Soldatenko K.A., Yukhnevich A.V. Self-Forming of Silicon Surface Nanorelief Near Edges of Chemical Masks During Anisotropic Etching // Physics, Chemistry and Aplication of Nanostructures: Review and Short Notes to International Conference “NANOMEETING – 2003”. 2003. Minsk. P. 377–380.
  14. Yukhnevich A.V. Radiative-Luminescent Method for Impurity and Isotopic Analysis of Silicon Monocrystals // II Nizhny Novgorod WorkShop “High-Purity Monoisotopic Silicon. Production, Analysis, Properties and Aplication”– “Monoisotopic Si – 2003”. 2003. Nizhny Novgorod, Russia. P.21–23.
  15. Yukhnevich A.V., Kuznetzov V.L. Tightness Testing of Heat Transport Assemblies Operating in Vacuum // International Conference for Material Testing “MAT–2001”: Abstracts. 2001. Nuremberg, Germany. P.32.
  16. Yukhnevich A.V., Losik O.P., Kuznetzov V.L., Panenko A.V. Memory surfaces for STM-based data storage // Proceedings of the World Microtechnologies Congness "MICRO.tec 2000", Vol. 2. 2000. Hannover, Germany. P. 741–744.
  17. Yukhnevich A.V., Losik O.P., Kuznetzov V.L., Panenko A.V.  STM probe stimulated creation of nanosize memory devices // Physics, Chemistry and APlication of  Nanostructures: Review and Short Notes to International Conference “NANOMEETING – 99”. 1999. Minsk. P. 388–390.
  18. Yukhnevich A.V., Novik A.F., Demesh I.Yu. Silicon  monocrystalline probes for STM and AFM  // Physics, Chemistry and APlication of  Nanostructures: Review and Short Notes to International Conference “NANOMEETING – 97”. 1997. Minsk. P. 253–254
  19. Yukhnevich A.V., Shuvajev L.E., Novik A.F.  Nanorelief of the etched Si-surfaces // Physics, Chemistry and APlication of Nanostructures: Review and Short Notes to International Conference “NANOMEETING – 95”. 1995. Minsk. P. 205–206.
  20. Yukhnevich A.V., Demesh I.Yu., Кuznetzov V.L., Shuvajev L.E. Memory element based on single alkali metal atom // Herald of Russian Acad. Tech. Sci. 1994.Vol. 1, № 7. P. 843–850.
  21. Leinova S.L, Ovsyannikova S.V., Yukhnevich A.V.  Types of Surface Microrelief Formed by Acid Etching of Silicon Single-crystals // Inorganic materials.  1988. Vol.  24. P. 298–301
  22. Artemeva S.V., Yukhnevich A.V., Shuvaev L.E., Leinova S.L.  Silicon etching by Hf + CrO3 + H2O solutions // Inorganic materials. 1985. Vol. 21. P. 1559–1560.
  23. Yukhnevich A.V., Shuvayev L.E., Artemyeva S.V., Vecher A.A.  Crystallographic Peculiarities of Dislocations Detection in Silicon Single-crystals During Selective Etching // Kristallografiya.  1984. Vol. 29. P. 172–174


 
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