Polarity of C≡P bond in monocoordination phosphorus compounds

The polarity of the C≡P bond in monocoordination phosphorus compounds was determined, which in the studied series of compounds is practically independent of the substituent on the carbon atom. © 1984 Plenum Publishing Corporation

Dipole moments and conformations of benzyldiphenylphosphine oxides

The p-substituted benzyldiphenylphosphine oxides in solution have a conformation with a gauche orientation of the Csp3-Csp2 and P=O bonds. © 1982 Plenum Publishing Corporation

A conformational analysis of o,o'- and m,m'-disubstituted diphenyl disulfides and diselenides based on dipole moments and Kerr constants

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 of the substituents lies inside, and one outside, the C-E-E-C dihedral angle. © 1979 Plenum Publishing Corporation

Polarity and Conformation of Phospha-λ5-azenes in Solutions

Conformations of a series of phosphazenes Ph3C=N-C6H4-X-o in solutions, determined by method of dipole moments and IR spectroscopy, are considered. The derivatives possessing alkyl substituents exist in bisector conformations with the rotation angle of aromatic fragment relative to N-Csp2-30° < φ < 30°. The alkoxy substituted derivatives have the rotation angle φ 90°

Reactivity of One-Coordinate Phosphorus Compounds. Kinetics of Diels-Alder Reactions of Tetraphenylcylopentadienone with Compounds Containing C≡P, C≡C, and C≡N Bonds

The kinetics of the Diels-Alder reactions of tetraphenylcyclopentadiene with tert-butylphosphaethyne, tert-butylacetylene, and butyronitrile have been studied in toluene at 110°C. The rate constants of these reactions, calculated with regard to thermal reduction of tetraphenylcyclopentadiene (rate constant 4.27 x 10-7 s-1), are 2.87 x 10-4, 4.09 x 10-6, and 2.7 x 10-8 1 mol-1 s-1, respectively. The reactions can be classed with those involving diene as acceptor and dienophile as donor

Phospha-alkynes—compounds of monocoordinate phosphorus

The review gives a systematic account of and surveys the results of studies on compounds of monocoordinate phosphorus. The methods of synthesis of phospha-alkynes from phosphines and phospha-alkenes (by pyrolysis or low-temperature elimination), their structure and physico-chemical properties, and also their chemical behaviour in complex-formation and cycloaddition reactions are examined. © 1985 IOP Publishing Ltd

Phospha-alkynes—compounds of monocoordinate phosphorus

The review gives a systematic account of and surveys the results of studies on compounds of monocoordinate phosphorus. The methods of synthesis of phospha-alkynes from phosphines and phospha-alkenes (by pyrolysis or low-temperature elimination), their structure and physico-chemical properties, and also their chemical behaviour in complex-formation and cycloaddition reactions are examined. © 1985 IOP Publishing Ltd

Le Courrier des spectacles, ou Journal des théâtres

18 février 18061806/02/18 (N3305)

Dipole moments and conformations of benzyldiphenylphosphine oxides

The p-substituted benzyldiphenylphosphine oxides in solution have a conformation with a gauche orientation of the Csp3-Csp2 and P=O bonds. © 1982 Plenum Publishing Corporation

Differential responsiveness to hormones of c3h and a mouse mammary tissues in organ culture.

The p-substituted benzyldiphenylphosphine oxides in solution have a conformation with a gauche orientation of the Csp3-Csp2 and P=O bonds. © 1982 Plenum Publishing Corporation