57 Result(s)

Article

Study of conjugation in sydnones and sydnonimines by the simple MO LCAO method with Pullman parameters

A number of sydnone and sydnonimine derivatives were calculated by the simple Huckel method with Pullman parameters. Several physical characteristics of the molecules are compared with the calculated data.

E. V. Borisov, L. E. Kholodov, A. A. Bagatur'yants… in Chemistry of Heterocyclic Compounds (1970)

Article

Sydnones and sydnone imines

For a number of sydnone imines with nonaryl substituents in position 3 the influence of structural factors on the kinetics of alkaline ring-opening has been studied and it has been found that the stability of ...

L. E. Kholodov, E. V. Borisov, V. G. Yashunskii in Chemistry of Heterocyclic Compounds (1971)

Article

Comparison of the calculated quantum-chemical characteristics of sydnones and sydnonimines with the experimentally observed molecular parameters

Approximate correlations of the interatomic distances, dipole moments, IR spectral frequencies, and polarographic reduction potentials of sydnones and sydnonimines with the quantum-chemical characteristics of ...

E. V. Borisov, L. E. Kholodov, A. A. Bagatur'yants… in Chemistry of Heterocyclic Compounds (1971)

Article

Mechanism of dislocation maxima of internal friction

E. V. Borisov, G. A. Vedenyapin in Soviet materials science : a transl. of Fi… (1973)

Article

The influence of deformation rate and temperature on the strength of low — carbon steel

V. A. Baldin, E. V. Borisov, V. N. Potapov in Strength of Materials (1973)

Article

Generation in benza nthrones in acids

A. Ya. Gorelenko, E. V. Borisov, I. I. Kalosha… in Journal of Applied Spectroscopy (1975)

Article

CNDO/2 study of the electronic structure of 3-methylsydnone, 3-methylsydnonimine, and 3-methylsydnonimine cation

E. V. Borisov, V. G. Yashunskii in Journal of Structural Chemistry (1975)

Article

Redistribution of the main components of steel 1Kh18N9T after beryllization and tests in a flow of lithium

O. M. Zbozhnaya, E. V. Borisov in Soviet materials science : a transl. of Fi… (1975)

Article

¹³C-NMR spectra of 3-methylsydnone and 3-methylsydnoneimine hydrochloride

The δ (C¹³) values of the ring carbon atoms for the C¹³-NMR spectra of 3-methylsydnone and 3-methylsydnoneimine, described for the first time, are compared with the values calculated by the Karplus-Pople method. ...

E. V. Borisov, N. V. Gorskaya, V. G. Yashunskii… in Chemistry of Heterocyclic Compounds (1975)

Article

Study of the electronic spectra of sydnones and sydnoneimines

The absorption spectrum of 3-methylsydnone and the luminescence spectra of 3-methyl- and 3-phenylsydnone and 3-methylsydnoneimine hydrochloride were interpreted on the basis of calculations by the Pariser-Parr...

E. V. Borisov, V. V. Ogorodnikova, N. D. Lebedeva… in Chemistry of Heterocyclic Compounds (1976)

Article

Structural features of the π-electron shells of mesoionic heterocycles

The computational method is described and the results of calculations of various characteristics of the ground and excited states of tropone, azulene, and 42 molecules belonging to 24 types of heterocyclic sys...

E. V. Borisov in Chemistry of Heterocyclic Compounds (1976)

Article

Quantum-chemical treatment of the mechanism of urethane formation by the extended Hückel method

1. Potential curves for model reactions of urethane formation have been calculated by the extended Hückel method...

S. P. Bondarenko, R. P. Tiger… in Bulletin of the Academy of Sciences of the… (1977)

Article

Phase and structural transformations during heating of molybdenum carbide coatings

A. A. Babad-Zakhryapin, M. I. Lagutkin, L. R. Yushina… in Metal Science and Heat Treatment (1978)

Article

Mixed hydride complexes of rhodium with triphenylphosphine and d-α-methylbenzylamine as catalysts for homogeneous asymmetric hydrogenation reactions

1. Circular dichroism, electronic spectra, and PMR methods have been used to study the formation of mixed comple...

L. M. Koroleva, E. V. Borisov, V. K. Latov… in Bulletin of the Academy of Sciences of the… (1978)

Article

Mass transfer in single crystals of molybdenum and silicon carbide under irradiation with low-energy glow-discharge ions

A. A. Babad-Zakhryapin, E. V. Borisov, I. B. Savvatimova… in Soviet Atomic Energy (1980)

Article

Radiation heater with disperse heat carrier

The article contains calculations of the temperature profile of a radiation tube with disperse heat carrier by Fourier's equation of heat conduction and by a system of equations taking the disperse structure o...

N. V. Antonishin, E. V. Borisov, V. V. Lushchikov… in Journal of engineering physics (1980)

Article

Influence of the nature of the substituents and the medium on the mechanism and rate of proton transfer in diaryltriazenes

1. Electron-donor substituants in an aryl radical of symmetric diaryltriazenes (DAT's) accelerate the prototropi...

A. N. Nesmeyanov, E. V. Borisov… in Bulletin of the Academy of Sciences of the… (1981)

Article

Interaction of molten copper with molybdenum

A. A. Babad-Zakhryapin, E. V. Borisov, M. I. Lagutkin in Metal Science and Heat Treatment (1981)

Article

An x-ray study of N⁶-(2-thio-4-methyl-1, 3, 2-dioxaphosphorinan-2-YL)-3-β-phenylisopropylsydnonimine, C₁₅H₂₀N₃D₃PS

E. V. Borisov, N. N. Nevskii, A. K. Akhlebinin… in Journal of Structural Chemistry (1985)

Article

Effect of substituents on the tautomeric equilibrium of 1(3)-(4-fluorophenyl)-3(1)-aryltriazenes in THF and pyridine

1. The location of the tautomeric equilibrium of 1(3)-(4-fluorophenyl)-3(1)-aryltrizenes in THF and pyridine dep...

E. V. Borisov, A. S. Peregudov… in Bulletin of the Academy of Sciences of the… (1986)