The preparation and characterization of binary phosphorus–selenium rings

作者：Mark J. Pilkington, Alexandra M. Z. Slawin, David J. Williams, Paul T. Wood, J. Derek Woollins · 发表于：Heteroatom Chemistry · 年份：1990 · DOI：10.1002/hc.520010502 · 被引用次数：50 · 研究领域：Organophosphorus compounds synthesis、Synthesis and characterization of novel inorganic/organometallic compounds、Organometallic Complex Synthesis and Catalysis

Abstract Depending on the ratio of reactants, reaction of (PPh)5 (1) with grey selenium gives (PhPSe2)2 (2), (PhP)3Se2 (3), (PhP)4Se (4), and (PhP)3Se3 (5). The compounds have been characterized by multielement NMR, mass spectrometry, microanalyses, and, in the case of 4, X‐ray crystallography. 4 consists of a puckered 5‐membered ring with all four phenyl substituents axial; the average P–P and P–Se bond lengths are 2.194 and 2.271 Å respectively.