Quantum chemical calculations of certain compounds of tetra- and pentacoordinated phosphorus by the CNDO method

Conclusions A quantum chemical calculation of six molecules of tetracoordinated phosphorus and five molecules of pentacoordinated phosphorus by the CNDO method permitted an explanation of individual details of the mechanism of certain reactions of these compounds and the variation of their reactivity.Translated from Izvestiya Akademii Nauk SSSR, SeriyaKhimicheskaya, No. 11, pp. 2486–2490, November, 1973.     

Quantum-chemical interpretation of the reorientation of dialkyl-<Emphasis Type="Italic">cis</Emphasis>-9,10-dihydroanthracene-9,10-endofumarates on a silver-containing stationary phase

The chromatographic behavior of a series of dialkyl-cis-9,10-dihydroanthracene-9,10-endofumarates on a silver-containing stationary phase with various mobile phase compositions and at various temperatures was investigated by liquid chromatography. The observed relationships indicate reorientation of the analytes on the surface of the adsorbent with increase in temperature. This is explained by the formation of two types of chelate complexes similar in energy between the analytes and the silver ions. It agrees well with data calculated by the B3LYP/LANL2DZ method.__________Translated from Teoreticheskaya i Éksperimentalnaya Khimiya, Vol. 41, No. 1, pp. 1–6, January–February, 2005.     

Reaction of diethyl mesoxalate with difluoramine in strongly acid media

Conclusions Together with the previously described-difluoramino--hydroxymalonic ester, 1-ethoxy-2-fluoriminooxalate, the first stable member of N-fluorimino acids, is formed when diethyl mesoxalate is reacted with HNF₂ in the presence of 27–30% oleum.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2622–2624, November, 1981.