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1.
E. V. Sennikova A. S. Antsyshkina G. G. Sadikov A. V. Bicherov O. Yu. Korshunov G. S. Borodkin M. S. Korobov V. S. Sergienko N. N. Kharabaev A. D. Garnovskii 《Russian Journal of Coordination Chemistry》2008,34(5):315-321
The chelate and molecular complexes of 2-(2-benzazolyl, perimidyl)-indandiones-1,3 were synthesized for the first time. The structures of the ligands (tautomeric forms) and complex compounds were determined from the X-ray diffraction, 1H, 13C NMR, and IR data and the quantum-chemical calculations (RHF SCF in 6-31 G** basis). 相似文献
2.
A. S. Antsyshkina G. G. Sadikov T. V. Koksharova I. S. Gritsenko V. S. Sergienko 《Russian Journal of Inorganic Chemistry》2006,51(10):1571-1576
A copper(II) valerate complex with nicotinamide (L) [CuL2(C4H9COO)2] (I) has been synthesized and studied by IR spectroscopy and thermogravimetry. The crystal structure has been determined. The crystals of 1 are monoclinic, a = 11.297(1) Å, b = 6.666(1) Å, c = 16.873(2) Å, b = 108.50(1)°, V = 1204.9(3) Å3, Z = 2, space group P21/c. The structural units of the crystal of I are centrosymmetric tetragonal bipyramidal (4+2) complex molecules. The equatorial positions of the bipyramid are occupied by trans-arranged pairs of O (Cu-O, 1.973 Å) and N (Cu-N, 2.006 Å) atoms, and the axial positions are occupied by the second O atoms of the valerate anions located at longer distances (Cu-O, 2.506 Å). The supramolecular associates formed in the crystal are layers of hydrogen-bonded complexes. The disordered hydrocarbon “tails” of the valerate groups point toward the interlayer space. 相似文献
3.
A. P. Klyagina I. F. Golovaneva G. G. Sadikov A. A. Levin 《Russian Chemical Bulletin》1990,39(8):1615-1617
A correlation between the stereochemistry and sign of the Cotton effect for * transition in the spectra of dimolybdenum tetracarboxylates and related compounds has been accomplished by constructing, within the framework of a one-electron model of optical activity, a 32-sector rule based on data from x-ray structure analysis and circular dichroism for dimolybdenum tetra-(R)-mandelate. It has been shown that a positive value of the pseudoscalar function xyz(x2–y2)(a2-z2) corresponds to a negative Cotton effect for the * transition in the case in which the dominant contribution to this effect comes from Rx components of the rotator strength of the transition.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1783–1785, August, 1990. 相似文献
4.
E. Sváb N. Kroó S.N. Ishmaev I.P. Sadikov A.A. Chernyshov 《Solid State Communications》1983,46(4):351-353
The S(Q) structure factor of (Ni65Fe35)77B23 metallic glass was measured by time-of-flight neutron diffraction up to 24 Å?1 momentum transfer. The distribution of transition metal-boron and transition metal-transition metal first neighbour atom pairs is resolved in the distribution function obtained from S(Q) by Fourier transformation. The distances of these first neighbours pairs, the width of their distribution, the partial coordination numbers and the short range order parameter are given. The results on (Ni65Fe35)77B23 and on the previously studies Fe81B19 amorphous alloys are compared. 相似文献
5.
E. Svab N. Kroo S.N. Ishmaev I.P. Sadikov A.A. Chernyshov 《Solid State Communications》1982,44(8):1151-1155
The structure factor of Fe81B19 metallic glass was measured by the conventional and time-of-flight neutron diffraction methods in the 0.4<Q<24 Å-1 momentum transfer range, yielding high resolution (~0.26 Å) in r-space. The pair distribution function obtained by Fourier transformation is resolved into subpeaks. The distances and distribution widths of the Fe-B and Fe-Fe first neighbours, the partial coordination numbers and the short range order parameter are given. The results clearly indicate preferential chemical bonding between iron and boron atoms. 相似文献
6.
7.
The effect of extensin-like cotton proteins (ELP) on animal cell gene (KML cell culture) was studied. Cells perish (50%) at protein dose 100 g/mL (cytotoxic effect). DNA fragmentation is not observed. Cell death from ELP is hypothesized to occur via necrosis resulting from destruction of intracellular biochemical processes 相似文献
8.
E. V. Nefeodova N. N. Tiden K. Siemensmeyer P. A. Alekseev V. N. Lazukov I. P. Sadikov N. Yu. Shitsevalova 《Journal of Experimental and Theoretical Physics》2007,105(1):12-13
The roles of various physical mechanisms in the properties of the ground state of the Pr ion in PrB6 are studied by measuring magnetic excitation spectra in the paramagnetic and magnetically ordered phases of polycrystalline PrB6. The ground state of the Pr ion in the paramagnetic phase is experimentally found to be triplet Γ5. During the transition into the magnetically ordered state, this triplet splits into three singlet levels. The results obtained do not exclude the appearance of an additional contribution to the splitting induced by a decrease in the local symmetry because of structural distortions. 相似文献
9.
A. U. Makhkamova É. V. Safonova A. Z. Sadikov E. K. Dobronravova T. T. Shakirov 《Chemistry of Natural Compounds》1989,25(3):380-381
Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 436–438, May–June, 1989. 相似文献
10.