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In coordination chemistry, the bite angle is the angle on a central atom between two bonds to a bidentate ligand. This ligand–metal–ligand geometric parameter is used to classify chelating ligands, including those in organometallic complexes. It is most often discussed in terms of catalysis, as changes in bite angle can affect not just the activity and selectivity of a catalytic reaction but even allow alternative reaction pathways to become accessible.[1][2][3]
Although the parameter can be applied generally to any chelating ligand, it is commonly applied to describe diphosphine ligands, as they can adopt a wide range of bite angles.[2][3]
- ^ van Leeuwen, P. W. N. M.; Kamer, P. C. J.; Reek, J. N. H. (30 August 1999). "The bite angle makes the catalyst". Pure and Applied Chemistry. 71 (8): 1443–1452. doi:10.1351/pac199971081443. S2CID 55202377.
- ^ a b Dierkes, Peter; van Leeuwen, Piet W. N. M. (1999). "The bite angle makes the difference: a practical ligand parameter for diphosphine ligands". Journal of the Chemical Society, Dalton Transactions (10): 1519–1530. doi:10.1039/A807799A.
- ^ a b Birkholz (née Gensow), Mandy-Nicole; Freixa, Zoraida; van Leeuwen, Piet W. N. M. (2009). "Bite angle effects of diphosphines in C–C and C–X bond forming cross coupling reactions". Chemical Society Reviews. 38 (4): 1099–118. doi:10.1039/B806211K. PMID 19421583.
