Phosphazenes and Phosphazanes—The Nature of the P-N Bond
- 1 February 1994
- journal article
- research article
- Published by Taylor & Francis in Phosphorus, Sulfur, and Silicon and the Related Elements
- Vol. 87 (1-4) , 101-111
- https://doi.org/10.1080/10426509408037444
Abstract
Synthetic, spectroscopic and X-ray structural studies on linear and cyclic λ3-diphosphazanes, λ3-cyclotriphosphazanes, λ5-cyclotriphosphazenes and a bicyclic P4N5 derivative are summarised. Transition metal organometallic chemistry of linear and cyclic λ3-phosphazanes and suitably functionalised λ5-cyclotriphosphazenes is also investigated. Novel mono- and dinuclear palladium complexes have been isolated from spirocyclic λ5cyclotriphosphazenes by facile hydrolytic cleavage of a λ5-diazaphospholane ring. The structural data on P-N compounds and their complexes and ab initio molecular orbital calculations on selected model systems provide strong evidence for “negative hyperconjugation” as a dominant feature of multiple bonding between phosphorus and nitrogen.Keywords
This publication has 1 reference indexed in Scilit:
- Iminophosphanes: Unconventional Compounds of Main Group ElementsAngewandte Chemie International Edition in English, 1991