Reaction of diaroylethylenes with ortho-phenylenediamine and its derivatives

Derivatives of 1,2-dihydroquinoxaline were synthesized. The direction of the reaction of unsymmetrical diaroylethylenes with o-phenylenediamine was shown by chemical and spectral methods and the reaction mechanism was discussed.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5 pp. 656–661, May, 1986.     

Tetrahalotetraazafulvalenes — New strong electron acceptors

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, p. 1421, October, 1989.     

Mackey–Ahrens Theorem for Spatial Scales

The Mackey–Ahrens theorem on topologies which are congruent in duality is extended to the duality of inductive scales of spaces.     

Formation of derivatives of 1,2,4-triazoloquinazolines in the reactions of 3-amino-1,2,4-triazoles with cyclohexanone

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 999–1000, July, 1990.     

Study of Properties of Structural Materials of Powerful Pulsed Plasma Facilities under Extreme Loads

Physics of Atomic Nuclei - The effect of high-current relativistic electron beams on samples made of polycrystalline tungsten (Goodfellow) and corrosion-resistant ferrite-martensitic steel EK-181...     

Ammonolysis of magnesiothermic tantalum powders

Tantalum nitrides are synthesized by ammonolysis of a mesoporous magnesiothermic tantalum powders. The effect of specific surface area of the powders and synthesis temperature on product composition is shown. Nitrogen content in the ammonolysis product of tantalum powder with a specific surface area of 56 m² g^–1 corresponds to oxynitride TaON exposed to 600°C for 1 h. The specific surface area of the oxynitride is 35 m² g^–1.     

A quantum-mechanical study of inductive and steric effects in isoalkanes

The method of “quantum mechanics of atoms in molecules” was used to find the parameters of functional groups in isopropylalkanes. The relation between such concepts of the classic theory of the structure of molecules as inductive and steric effects and electron density distribution was shown. Branching could cause deformation of the shape of an atom in a molecule accompanied by changes in volume and energy with charge conservation. The degree of damping of intramolecular steric and inductive effects was substantiated and described. An analysis of transferability of groups and the corresponding parameters was performed to obtain procedures for calculating properties by additive methods.     

Shear viscosity of dispersions of particles with liquid shells

Shear viscosity of the dispersions of particles with a liquid shell is calculated on the basis of cell method. The problem of choosing an optimal radius of the cell is considered. Exact expression for the shear viscosity of dispersion, which is suitable at the arbitrary volume fraction of dispersed phase, is derived.