ChemInform Abstract: CHEMIE DES PHOSPHORS 59. MITT. SYNTHESE UND STRUKTUR VON (C6H5PS)3

Abstract

Die Titelverbindung (I) wird durch Umsetzung von Dikaliumtriphenyltriphosphid mit S3 C12 , von Pentaphenylpentaphosphin mit Schwefel in siedendem Benzol oder von Phenylphosphin mit SCl2 in sehr guter Ausbeute erhalten.

Preparation and crystal structures of two phosphorus–sulphur rings: (PhP)3S3and (PhP)2S4

“…The molecular structures of (1) [=(lb)] and (2) are shown in Figures 1 and 2 respectively. Whereas ( 1 ) possesses no symmetry, (2) lies on a crystallographic centre of symmetry, which obliges the exocyclic sulphur atoms to be trans. The conformation of ( 2 ) is similar ti) that reported for (MePSJ1 (3).…”

“…The compound of empirical formula (PhP)3S3 (1) has been reported by a number of authors. A very thorough study by Baudler et al ' showed that various reaction conditions all led to the same isomer, to which the structure (la) was assigned on the basis of spectroscopic evidence, in particular the ABX proton-decoupled 31P n.m.r.…”

“…Reaction of (1) with sulphur yields the known Preparation of (PhP)& ( 2). -Compound (1) ( 1.75 g, 4.16 mmol) was refluxed in CS, (50 cm3) with excess sulphur (0.4 g, 12.5 mmol).…”

Phosphorus-Chalcogen Ring Expansion and Metal Coordination

“…The solid-state structures of 2Ch resemble those previously reported. 23,25,26 The structures of 7 S M confirm the formation of a ring expansion product from the parent 4-membered ring, and possess the same P 3 Ch 3 cores as 2Ch. However, in 7 S M, the metal is bound by each phosphorus atom from within the 6membered ring.…”