Disulfide and diselenides of bis(phosphines) derived from N, N′-substituted ethylenediamines. The crystal and molecular structure of Ph 2P(S)N(Ph)CH 2CH 2N(Ph)P(S)Ph 2

Abstract

The reactions of bis(diphosphino)ethylenediamine derivatives, [Ph 2PN(R)CH 2] 2 (R=CH 3, CH 2Ph or Ph) with elemental sulfur and selenium afford the corresponding disulfide or diselenide derivatives in good yield. All compounds have been characterized by elemental analysis, NMR ( 31P and 1H) and IR spectroscopic data. The structure of one of the disulfide derivative, [Ph 2P(S)N(Ph)CH 2] 2 is determined by X-ray crystallography.