Issue 12, 2000
From the journal:

Journal of the Chemical Society, Dalton Transactions

Guanidinates as chelating anionic ligands for early, middle and late transition metals: syntheses and crystal structures of [Ti{η2-(NPh)2CNEt2}2Cl2], [Ru{η2-(NPh)2CNHPh}3] and [Pt{η2-(NPh)2CNHPh}2]

Philip J. Bailey,*a   Keith J. Grant,a   Lindsey A. Mitchell,a   Stuart Pace,a   Andrew Parkina  and  Simon Parsonsa  

* Corresponding authors

a Department of Chemistry, The University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, UK
E-mail: Philip.Bailey@ed.ac.uk

Abstract

Treatment of the dimeric ruthenium halide complex [Ru(η-C6H6)Cl2]2 with 1,2,3-triphenylguanidine provided the tris-chelate [Ru{η2-(NPh)2CNHPh}3] with loss of the aromatic ligand and metal oxidation. This product may also be prepared by treatment of the previously reported [Ru(η-p-PriC6H4Me){η2-(NPh)2CNHPh}Cl] with bases (KOH, LiNiPr2, NEt3). Complexes containing chelating guanidinate ligands are also available by means of metathesis of the monolithiated ligands Li[C(NR)2NR2] with metal halide complexes, as exemplified by the synthesis of the square planar bis-chelate [Pt{η2-(NPh)2CNHPh}2] from [Pt(PhCN)2Cl2] and [Ti{η2-(NPh)2CN(Et)2}2Cl2] from [TiCl4(THF )2]. The characterisation of these complexes allows a comparison of the co-ordination properties of chelating guanidinates with early, middle and late transition metals.

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Article information

DOI
https://doi.org/10.1039/B001992P
Article type
Paper
Submitted
13 Mar 2000
Accepted
26 Apr 2000
First published
22 May 2000

J. Chem. Soc., Dalton Trans., 2000, 1887-1891

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Guanidinates as chelating anionic ligands for early, middle and late transition metals: syntheses and crystal structures of [Ti{η2-(NPh)2CNEt2}2Cl2], [Ru{η2-(NPh)2CNHPh}3] and [Pt{η2-(NPh)2CNHPh}2]

P. J. Bailey, K. J. Grant, L. A. Mitchell, S. Pace, A. Parkin and S. Parsons, J. Chem. Soc., Dalton Trans., 2000, 1887 DOI: 10.1039/B001992P

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