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121.
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Allanus H. Tsoi 《Journal of Theoretical Probability》1993,6(3):451-461
Time reversal is considered for an infinite-dimensional point process with Markov intensity. An infinite-dimensional duality equation is derived, which is the point-process counterpart of the classical duality equation for diffusions. 相似文献
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I. N. Azerbaev L. A. Tsoi S. T. Cholpankulova A. B. Asmanova V. I. Artyukhin 《Chemistry of Heterocyclic Compounds》1978,14(7):738-741
2-Arylamino-2-selenazolines were obtained by reaction of primary 2-alkynylamines with aryl isoselenocyanates. It was established that 2-benzylaminoselenazolines have amine structures, while in the case of 2-arylaminoselenazolines the tautomeric equilibrium is shifted to favor the imine form.Deceased.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 917–920, July, 1978. 相似文献
126.
E. G. Tarakanova O. Yu. Tsoi G. V. Yukhnevich I. S. Kislina V. D. Maiorov N. B. Librovich 《Russian Journal of Physical Chemistry B, Focus on Physics》2008,2(5):690-696
The optimum structures of thirty three proton disolvates (B…H…B)+ and (B…H…S)+ containing O…H+…O, N…H+…N, and N…H+…O hydrogen bridges were calculated by the density functional theory method (B3LYP/6-31++G(d, p)). The bridge parameters are compared with the proton affinities (PAs) of B and S molecules. Several dependences between the PA or ΔPA = PAB ? PAS values and the R OO, R NN, and R NO distances were established. It follows from these results that the proton affinity of oxygen-or nitrogen-containing molecules that form (B…H…B)+ and (B…H…S)+ ions is an important but not the only factor determining the geometric parameters of hydrogen bridges in them. The dependences obtained can be used to estimate the length of the central fragment of proton disolvates if the PA values of molecules in the disolvates are known. They also allow the degree of proton transfer (the R N…H and R H…O distances) to be estimated for N…H+…O bridges. 相似文献
127.
Based on results of ab initio (6–31G and ECP) calculations, new data on the mutual effect of hydrogen bonds in (HHal)n · H2O · ((CH3)2O)m (n = 0, 1, 2; m = 0, 1, 2) aquacomplexes have been obtained. It is shown that the Hbonds formed by the lone electrons of the oxygen atom of the water molecule (by 20%) weaken each other significantly. The enthalpy of formation of HOH...O(CH3)2 bonds depends on which and how many halogen hydride molecules are bound with the water molecule via its lone electrons. But the ratio of the strengths of the HOH...O(CH3)2 bonds formed by the fragment (HHal)n · H2O (n = 0, 1, 2) with one and with two molecules of dimethyl ether remains virtually constant ( 10%). 相似文献