39654-12-1Relevant academic research and scientific papers
DARSTELLUNG UND NMR-SPEKTROSKOPISCHE CHARAKTERISIERUNG EINIGER DI-n-ALKYL- UND n-ALKYLARYL-CHLOROPHOSPHANE
Wolfsberger, W
, p. 167 - 174 (1986)
A series of di-n-alkyl and n-alkylaryl chlorophosphines has been prepared by the reaction of tetraorganodiphosphines with chlorodiphenyl or dichlorophenyl phosphine and characterized by 31P and 13C NMR spectra.
Phosphorus-Phosphorus Nuclear Spin Coupling in Tetraorganobiphosphines and Some of Their Derivatives
McFarlane, H. Christina E.,McFarlane, William,Nash, John A.
, p. 240 - 244 (2007/10/02)
The signs and magnitudes of (31)P-(31)P and (31)P-H spin coupling constants in tetraorganobiphosphines RR'PPRR' with Me, Ph, and/or Bu-t as substituents, and in their sulphides and selenides RR'P(X)P(X)RR' (X = S or Se), have been determined by (1)H- heteronuclear double resonance.Large variation in (1)J((31)P-(31)P) arise as a result of changes in the phosphorus hybridization and/or effective nuclear charge, and smaller variations as a result of changes in the position of rotameric equilibrium in the gauche conformers of the biphosphines.
