Issue 12, 2003

Synthesis and coordination chemistry of neutral phospha(iii)guanidines. Formation of 1-aza-3-phospha-4-metallacyclobut-1-ene rings at group 6 metals

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.

Graphical abstract: Synthesis and coordination chemistry of neutral phospha(iii)guanidines. Formation of 1-aza-3-phospha-4-metallacyclobut-1-ene rings at group 6 metals

Supplementary files

Article information

Article type
Paper
Submitted
05 Mar 2003
Accepted
30 Apr 2003
First published
16 May 2003

Dalton Trans., 2003, 2573-2577

Synthesis and coordination chemistry of neutral phospha(III)guanidines. Formation of 1-aza-3-phospha-4-metallacyclobut-1-ene rings at group 6 metals

J. Grundy, M. P. Coles and P. B. Hitchcock, Dalton Trans., 2003, 2573 DOI: 10.1039/B302554C

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