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Phospha‐ and Arsaalkenes RE=C(NMe 2 ) 2 (E = P, As) as Novel Phosphinidene‐ and Arsinidene‐Transfer Reagents
Author(s) -
Weber Lothar
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200700483
Subject(s) - phosphinidene , chemistry , nitrene , thermal decomposition , reactive intermediate , reagent , decomposition , halogenation , photodissociation , electrophile , electron transfer , medicinal chemistry , photochemistry , organic chemistry , catalysis
Phosphinidenes (phosphanylidenes) (RP) are electronically and coordinatively unsaturated phosphorus compounds, which, as six‐electron species, are formally analogous to the more familiar carbenes and nitrenes. In contrast to carbenes (CR 2 ), the extremely reactive phosphinidenes cannot be isolated without decomposition. Thus, our knowledge on phosphinidenes is mainly limited to trapping reactions and quantum‐chemical calculations. There are a number of synthetic methods for phosphinidenes available, for example photolysis or thermolysis of cyclic phosphanes and oligophosphanes, dehalogenation of organodihalophosphanes, liberation of dinitrogen from organodiazidophosphanes, or decomposition of phosphoranylidene‐σ 4 ‐phosphoranes (arylP=PMe 3 ). A plethora of information is available on the generation of highly reactive terminal phosphinidene complexes [RPW(CO) 5 ] and their chemistry. Many of these methods suffer from comparatively harsh conditions (strong base, heat, etc.) which limit their preparative use. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)