Wide Bite Angle Diphosphines:  Xantphos Ligands in Transition Metal Complexes and Catalysis

The reactivity of organotransition metal complexes is dependent on the ligand environment of the metal. This Account describes the development and application of new diphosphine ligands, designed to induce large P−M−P angles in transition metal complexes. Aided by computational chemistry, a homologo...

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Bibliographic Details
Published in:Accounts of chemical research 2001-11, Vol.34 (11), p.895-904
Main Authors: Kamer, Paul C. J, van Leeuwen, Piet W. N. M, Reek, Joost N. H
Format: Article
Language:English
Subjects:
Catalysis
Crystallography, X-Ray
Ligands
Metals - chemistry
Phosphines - chemistry
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Summary:The reactivity of organotransition metal complexes is dependent on the ligand environment of the metal. This Account describes the development and application of new diphosphine ligands, designed to induce large P−M−P angles in transition metal complexes. Aided by computational chemistry, a homologous range of diphosphines based on rigid heterocyclic aromatic backbones of the xanthene-type with natural bite angles of ∼100−134° have been developed. The special structure of the ligands has an enormous impact on stability and reactivity of various transition metal complexes. Highly active and selective catalysts have been obtained by influencing this reactivity.
ISSN:0001-4842
1520-4898
DOI:10.1021/ar000060+