Vier- und fünfgliedrige Phosphorheterocyclen, XIV Kationen des hexakoordinierten Phosphors.
Open Access
- 1 August 1976
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 31 (8) , 1058-1063
- https://doi.org/10.1515/znb-1976-0812
Abstract
The spirobi(benzodioxaphosphole) system stabilizes high phosphorus coordination. Thus bis(o-phenylenedioxy)chlorophosphorane adds pyridine in a fast first step without dissociation to a neutral, and in a slower second step to a cationic hexacoordinate phosphorus species. The equilibria compositions were determined by 31P NMR. The cation of the bis(pyridine) adduct can be isolated as the stable crystalline chloride which partly decomposes on dissolving. More stable, even in boiling water, is the cation of the 2,2′-bipyridine adduct. 1H NMR studies of the bis(pyridine) adduct lead to a cis structure. A δ31P comparison for hexacoordinate spirobi(benzodioxaphospholes) is given.Keywords
This publication has 0 references indexed in Scilit: