1. The conformational equilibrium in seven-membered 2-chloro(bromo)cyclohexanone ketals derived from 2-butenediol and its 2,3-dichloro and benzo analogs is ananchomerically shifted in favor of the axial form. 2. A graphical ...
1. According to their vibrational spectra, antimony trialkoxides of formula Sb(OR)3 with R=CH3, C2H5, n-C3H7, and i-C4H9 are associated; no signs of association are observed for the compounds with R=i-C3H7 and t-C4H9. 2. ...
1. It is shown by dipole-moment measurements and IR and PMR spectroscopy that 2-R-5,6-dichloro-1, 3-dioxacyclohept-5-enes (R=C6H5, p-ClC6H4, p-NO2C6H4 and the corresponding cyclohexanone ketal exist in the flexible form; ...
1. According to the data from13C NMR spectra, the effective conformation of anisoles, thioanisoles, and selenoanisoles is determined both by "methyl-ring" spatial interactions as well as by p, π conjugation of the O, S, ...
Acyclic aliphatic and aliphatic-aromatic sulfoxides exist in the form of equilibrium mixtures of conformations. In the case of bromomethyl methyl sulfoxide, a conformational equilibrium of three forms is observed, and an ...
1. Dipole moments, Kerr constants, and bond polarity and polarizability parameters for phosphorus have been determined for various pyrocatechol derivatives of phosphorous acid. 2. The pyrocatecholaryl phosphites have envelop ...
1. Dipole moments and components of the poiarizability tensor have been calculated for the S-N bond in the sulfamides. 2. The aryl radicals in the N,N-dimethylsulfamides project out of the C-S-N plane by an angle of 66 ...
1. The para-substituted gem-dichloropropyl aryl selenides have been synthesized, for the first time, and studied through their13C NMR spectra and their dipole moments and Kerr constants. 2. These compounds exist as gauche ...
1. The substituted methylarylsulfonates and arylarylsulfonates exist as mixtures of trans and gauche conformers, the latter predominating at equilibrium (∼70%). 2. The angle of aryl group rotation relative to the Csp3-S-O ...
1. Bond polarity parameters have been determined for the phosphorus in 2-phenyl-5,5-dimethyl-1,3,2-dioxaphosphorinanes and their phosphoryl and thiophosphoryl derivatives. 2. It has been established that the chair conformation ...
1. The "iodonium method" is an efficient way of synthesizing the selenonium ylides: 2-methylphenylselenuranylidenedimedon and methylphenylselenuranylidenedibenzoylmethane. 2. Similar to S-alkyl-substituted sulfonium ylides, ...
Effective conformations have been established for the o,o'- and m,m'-disubstituted diaryl disulfides and diselenides. Angles of aryl group rotation relative to the C-E-E plane have been determined for these compounds. One ...
Pudovik A.; Cherkasov R.; Zimin M.; Zabirov N.(1979)
The interaction of O,O-diisopropyl dithiophosphate with benzonitrile, phenylacetonitrile, adipodinitrile, and ethyl cyanoacetate proceeds with the formation of unstable imidoyldithiophosphates, which are capable of being ...
Energies of formation of complexes of hydrogen fluoride with compounds of tetracoordinated phosphorus, charge transfers in complexing, and other characteristics of these reactions calculated by CNDO/2 methods agree well ...