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Yu.A. Strelenko Yu.K. Grishin M.A. Kazankova Yu.A. Ustynyuk 《Journal of organometallic chemistry》1980,192(3):297-303
Temperature and concentration dependences of mercury-199 chemical shifts in benzene solutions of bis(methylethylketone)mercury Hg(CH2COC2H5) (I) and α-bis(methylacetoacetone)mercury Hg(CH2COCH2COOCH3)2 (II) are determined by the 1H-{199Hg}method. The NMR data obtained and the IR spectra are indicative of selfassociation of I and II in solution with the formation of weak intermolecular coordination bonds Hg ← :OC. The enthalpies of complex formation calculated on the assumption of one mercury atom bonding with only one carbonyl function are equal to ?3.2 ± 0.1 kcal/mol and ?2.2 ± 0.1 kcal/mol for I and II, respectively. 相似文献
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Yu. V. Babin A. V. Prisyazhnyuk Yu. A. Ustynyuk 《Russian Journal of Physical Chemistry B, Focus on Physics》2008,2(5):684-689
The potential energy surfaces of bis-(trifluoromethyl)-phosphinous (III), diemthylphosphinous (IV), and bis-(pentafluorophenyl)-phosphinous (V) acids, the geometric parameters of the cis and trans conformers of these acids, and their P-O and O-H stretching vibration frequencies were calculated by the density functional theory method (PBE, 4Z). The potential energy surface sections corresponding to internal rotations about the P-O bonds were constructed, and dynamic problems for such a motion of the proton in a cyclic potential were solved by the Ritz method using a basis set of 100 trigonometric functions. According to calculations, the energy differences between the cis and trans conformers of acids III–V were of 4–7 kJ/mol, and the heights of potential barriers separating these conformers were of from 11 to 16 kJ/mol. In acids III and V, the cis, and, in IV, the trans conformer was stabler. At 298 K, only the ground vibrational states were populated for both rotamers of IV and V and the cis conformer of III. The special features of the potential of III were such that, at 298 K, the first excited vibrational level of its trans conformer was also noticeably populated. 相似文献
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Novikov V. S. Kuznetsov S. M. Kuzmin V. V. Prokhorov K. A. Sagitova E. A. Darvin M. E. Lademann J. Ustynyuk L. Yu. Nikolaeva G. Yu. 《Doklady Physics》2021,66(9):257-263
Doklady Physics - The dependence of Raman spectra of the molecules containing polyene chains on the conjugation length, structure of side and end groups, and isomer type is analyzed theoretically. 相似文献
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V. L. Ivanov V. A. Roznyatovskii Yu. A. Ustynyuk A. L. Buchachenko 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2008,82(1):119-121
It was found that the photolysis of di(naphthyl-1-methyl)mercury (1) gives 1,2-dinaphthylethane (2) in heptane and benzene solvents and 2 and 1-methylnaphthalene in isopropanol and acetonitrile. Irradiation of 1 in carbon tetrachloride gives 2 and ClHgCH2C10H7 as primary reaction products, while the chloride is further photolyzed to 2. Quantum yields of the photolysis of 1 are high and equal to unity almost for all solvents. The chloride photodecomposition yield is an order of magnitude lower (0.1). 相似文献
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S. M. Peregudova L. I. Denisovich A. I. Yarmolenko L. N. Novikova N. A. Ustynyuk 《Russian Journal of Electrochemistry》2006,42(3):272-275
Using cyclic voltammetry method, the reduction of cationic η6-fluorene complexes of manganese [(η6-9-R-C13H9)Mn(CO)2L]PF6 (L = CO, R = H (1 +); L = CO, R = CH3 (2 +); L = PnBu3, R = H (3 +); L = CO, R = tBu (4 +)) is studied. It is shown that, depending on the nature of a substituent in the position 9 of the fluorene ligand, the reduction occurs either with the detachment of an H atom from position 9 to give zwitterion compounds (complexes 1 ±, 2 ±, 3 ±) or with the attachment of an H atom into the coordinated ring of the fluorene ligand to given η5-cyclohexadienyl complex (η5-9-tBu-C13H9)Mn(CO)3 (5). 相似文献