Time reversal of infinite-dimensional point processes

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.     

Synthesis and study of 2-arylaminoselenazolines

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.     

The influence of the proton affinity of molecules that form proton disolvates on disolvate hydrogen bridge parameters

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 = PA_B ? PA_S 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.