Synthesis and Coordination Chemistry of Neutral Phospha(III)guanidines. Formation of 1-aza-3-phospha-4-metallacyclobut-1-ene Rings at Group 6 Metal Centres

Grundy, Joanna, Coles, Martyn P and Hitchcock, Peter B (2003) Synthesis and Coordination Chemistry of Neutral Phospha(III)guanidines. Formation of 1-aza-3-phospha-4-metallacyclobut-1-ene Rings at Group 6 Metal Centres. Dalton Transactions, - (12). 2573 - 2577. ISSN 1477-9226

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Abstract

The neutral phospha(III)guanidine compounds, Ph2PC{NR}{NHR}(1a, R = Cy; 1b, R =iPr), are reported. NMR spectroscopic data indicated the presence of the Esyn isomer in solution and structural studies confirmed this in the solid-state. Reaction of 1a with M(CO)4(pip)2[M = Mo, W; pip = piperidine] proceeded via displacement of the piperidine ligands to generate the complexes M[Ph2PC{NCy}{NHCy}](CO)4(2a, M = Mo; 3a, M = W). The X-ray structure of 2a and 3a were solved, showing the first structurally characterised examples of 1-aza-3-phospha-4-metallacyclobut-1-ene rings.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: Martyn Coles
Date Deposited: 06 Feb 2012 19:48
Last Modified: 23 Mar 2012 16:11
URI: http://sro.sussex.ac.uk/id/eprint/22244
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