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1.
N. K. Eremenko S. S. Kurasov A. V. Virovets T. Struchkov V. V. Bashilov V. I. Sokolov 《Russian Chemical Bulletin》1997,46(1):164-167
New platinum-mercury clusters, Pt4(HgX)2(μ-CO)4(PR3)4 (X=Cl, Br, I, CF3, or CCl3; R=Ph or Et), were synthesized. The molecular and crystal structure of the Pt4(HgBr)2(μ-CO)4(PPh3)4 cluster was established by X-ray structural analysis. 相似文献
2.
A detailed analysis of an expansion in powers of 1/N (N1) for the Hamiltonian and the transfer-matrix of the Ising chain consisting ofN sites is presented. A special attention is paid to a term proportional to 1/N closely related to the theory of free massless Majorana fermions. An effective Hamiltonian isomorphic to that in conformally invariant theory is derived. The eigenvectors of the Ising Hamiltonian are classified in the framework of conformal algebra representation theory. The momentum and the energy for these states are expressed through the central charge and conformal dimensions. A similar relation for the logarithms of the transfer-matrix eigenvalues is ascertained. These are complex-valued functions of a spectral parameter . A real part of such a function is shown to be proportional to sin , while an imaginary one - to cos. A direct geometrical interpretation of the lattice spectral parameter in the context of the conformally invariant theory for fermions inhabiting a torus is indicated. In other words, these fermions are represented as analytic anticommuting variables double (anti) periodic in a complex plane. The value of the spectral parameter coincides with an angle between these (anti) periods. A general scheme for the above expansion presumably suitable for a wide class of exactly solvable models is conjectured. 相似文献
3.
B. L. Tumanskii V. V. Bashilov N. N. Bubnov S. P. Solodovnikov V. I. Sokolov 《Russian Chemical Bulletin》1994,43(5):884-886
Using ESR spectroscopy, the reaction of P(O)(OPri)2 phosphoryl radicals with C60ML2 (M=Pd, Pt) was studied and the spin-adducts formed were shown to be unstable under the reaction conditions. The 5-addition of Pt(PPh3)4 to the dimer of phosphorylfullerenyl radicals results in metal-containing dimers (RO)2(O)PL2MC60-C60ML2P(O)(OR)2, which dissociate when exposed to visible light to afford C60ML2P(O)(OR)2 radicals; ML2 in these complexes is located in different positions in relation to the radical center. As a result, the ESR spectra contain the superposition of at least five signals of radicals that differ in HFS constants andg-factors.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 938–940, May, 1994.The present work was supported by the Russian Foundation for Basic Research (Projects 93-03-18725 and 93-03-4101). 相似文献
4.
G.Z. Suleimanov V.V. Bashilov A.A. Musaev V.I. Sokolov O.A. Reutov 《Journal of organometallic chemistry》1980,202(2):C61-C63
The molecular structures of the L-menthyl ester of S-α-bromomercuriphenyl-acetic acid, diastereomer II, [α]20D ?18°, and of the related L-menthyl ester of α-bromobis(triphenylphosphine)platinummeruriphenylacetic acid, VI, have been investigated by the X-ray method. Insertion of L2Pt carbenoid appears to occur into the HgBr bond in II and two phosphine ligands in the product VI occupy cis positions in a planar square around the platinum atom. The HgPt distance is 2.50 Å; there is intermolecular HgBr coordination in II, the distance being 3.23 Å. 相似文献
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Solodovnikov S. P. Tumanskii B. L. Bashilov V. V. Lebedkin S. F. Sokolov V. I. 《Russian Chemical Bulletin》2002,51(6):1009-1014
The ESR spectra of the products of oxidation of solutions and powders of Y@C82 and La@C82 with fuming sulfuric acid were studied. Based on the oxidation conditions and the sequence of spectral patterns, the spectra were attributed to the radical cations M@C82
n+ (n = 2, 4), dimers M3+
2@C164
+, and polyendometallofullerenes. 相似文献
7.
It has been shown that ruthenium can be determined in solutions of ammonium nitrosopentachlororuthenate (NH4)2[Ru(NO)Cl5] with nitroso and aquachloro complexes present simultaneously by its reaction with 1,10-phenanthroline and in solutions of sulfate complexes using microwave radiation. It is found by molecular absorption and luminescence studies that the composition of the complex formed corresponds to ruthenium(II) tris-(1,10-phenanthrolinate) {[Ru(Phen)3]2+}. The complexation time is decreased by several tens of times (down to 5 min) compared to conventional heating, and a 100% yield of the complex is achieved. In the presence of HCl, the conversion of nitroso species to aquachloro ruthenium complexes upon microwave irradiation is inefficient. It is found that, compared to [Ru2OCl10]4–, [Ru(NO)Cl5]2– is more labile in the complexation reactions of ruthenium with 1,10-phenanthroline under microwave irradiation. Regardless of the concentration of H2SO4 (1.7–12 M) in the starting solutions, ruthenium sulfate complexes can be converted in a microwave field to more labile chloride complexes. 相似文献
8.
K. P. Butin V. V. Bashilov T. V. Magdesieva V. I. Sokolov O. A. Reutov 《Russian Chemical Bulletin》1985,34(2):416-417
Conclusions 1-(8-Quinolyl)ethylmercuric bromide undergoes racemization upon heating in methanol at reflux. This process was interpreted in terms of a radical mechanism for the solvolytic demercuration.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 457–459, February, 1985. 相似文献
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