CONTENTS
Theory of molecular structure and chemical bonding
Baranov V.I., Gribov L.A., Jenjer V.O. Parametric semiempirical method in the theory of vibronic spectra of polyatomics 419
Burenin A.V. Virtual geometric symmetry group of a nonrigig molecule with energetically nonequivalent equilibrium configurations 432
Solomonik V.G., Pogrebnaya T.P., Sliznev V.V. Nonempirical study of the structure, force field and vibrational spectrum of LiClO3 molecule .................................................................... 440
Ermilov A.Yu., Freidzon A.Ya., Pupyshev V.I., Stepanov N.F. Modeling electronic structure of lithium graphite intercalate compounds by metal complexes with polybenzene systems ...................................... 450
Coropceanu V.P., Paladii F.G., Boldyrev S.I., Gamurar V.Ya. The magnetic properties of tetrameric tetrahedral clusters with bielectron transfer.................................................................... 458
Medvedeva N.I., Gubanov V.A. The electronic structure and properties of Aurivillius phases . 471
Study of the structure of molecules by physical methods
Kuchkaev B.I., Knyasev B.A., Vasiljev A.S. An electron diffraction study
of molecular structure, internal rotation and vibrational spectra of
N,N-diethylcyanamid .................................................. 479
Lapshina S.B., Ermolaeva L.I., Girichev G.V., Spiridonov V.P. The structure of the Hf(ClO4)4 molecule by gas phase electron diffraction .................................................................... 487
Gordeev A.D., Efremov D.I., Soifer G.B., Shchepin V.V. Molecular structures of trichloroacetyl halides and trichloroacetaldehyde as studied by quantum chemical calculations and 35Cl NQR spectroscopy ..................... 494
Volchenskova I.I., Keisevich L.V., Shalimov S.A., Maidanevich N.N., Kochubei D.I. Structural characterization of coordinational nodes for anticancerogenic complexe of di-m-quanine-bis-[cis-dichloroaquoplatinum(II)] in crystal
tetrahydrate .......................................................... 501
Sinyakov G.N., Shulga A.M. 1H NMR study of reduced nickel octaethylporphin complex ... 507
Okotrub A.V., Murakhtanov V.V. , Mazalov L.N., Novoseltsev O.A., Shevtsov Yu.V., Nasonova L.I., Belikova G.S., Turskaya T.N. X-ray spectra and electron structure of KxC60...................................... 514
Crystal chemistry
Borisov S.V., Ipatova E.N. An analysis of arangement variants of two atom sorts and the algorythm for deduction of planar centered cells for 36 nets .................................................................... 520
Virovets A.V., Sokolov M.N., Podberezskaya N.V., Fedorov V.E. Synthesis and crystal structure of [Nb2(S1,72Se2,28)(S2CNEt2)4] - the solid solution based on [Nb2(m2,h2–X2)2(S2CNEt2)4], where X2 = S2, SSe and Se2. Re-refinement of the [Nb2(S2)2(S2CNEt2)4] structure .................................................................... 528
Borodkin G.I., Gatilov Yu.V., Nagy S.M., Shubin V.G. Comparative study of molecular structures of 1-R-1,2,3,4,5,6-Hexamethylbenzenium ions: molecular and crystal structure of 1-chloromethyl-1,2,3,4,5,6-hexamethylbenzenium tetrachloroaluminate 534
Yuldashev A.M., Ibragimov B.T., Talipov S.A., Gapparov Kh.L. Substituted calix[n]arenes p-Isopropylcalix[4]aren, synthysis and structure of its clathrate with benzene ................................................ 539
Burlov A.S., Mistryukov A.E., Garnovskii A.D., Sergienko V.S. Crystal and molecular structure of N-(2-tosylaminobenzylidene) tert-bitulamine .................................................................... 544
Reviews
Naumov D.Yu., Podberezskaya N.V., Boldireva E.V., Virovets A.V. Crystal chemical analysis of structures of oxalic acid and its salts of the Mx(C2O4)y×nH2O
(n = 0–3) ............................................................ 550
Brief communications
Morokov Yu.N. Formation of ring fragments in carbon clusters ......................... 579
Basalaev Yu.M., Zhuravlev Yu.N., Poplavnoi A.S. Influence of structural singularities on electronic energy spectrum of sodium nitrate 583
Poleshchuk O.Kh., Koput J., Latosinska J.N. Ab initio calculation of NQR parameters of Sb2Cl10 molecule. 585
Varnek V.A. Nature of metastable high spin states forming at the spin transition in iron (II) complexes. 588
Orlov V.D., Kaluski Z. , Figas E., Potekhin K.A., Shishkin O.V. Crystaline and molecular structure of 2-(4-nitrobenzylidene)-1-tetralone. .................................................................... 591
Ovchinnikov Yu.E., Struchkov Yu.T. , Belousova L.I., Kozyreva O.B., Pestunovich V.A., Voronkov M.G. Intermolecular hypervalent interaction of O®Si–N in the crystal 1,3,4,4-tetramethyle-4-silaimidazolidinone-2 ... 594