The role of R3P–M bond bending in determining the stereochemical features of tertiary phosphine complexes of transition metals
- 1 January 1989
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 3,p. 200-202
- https://doi.org/10.1039/c39890000200
Abstract
For cis- and trans-MXY(PR3)2‘planar’ systems (M = Ni, Pd, Pt) the large deviations of ∠PMP bond angles from ideal {defined as α=(∠PMP –90°)cis; (180°–∠PMP)trans} are shown to correlate linearly with the average R3P tilt angle βavg. [β=(180°–∠CTPM) where CT= the centroid of the (α-C)3 unit of a R3P ligand]: the data are best rationalised by assuming that unfavourable electron repulsions involving C(α-C)3 units and neighbouring ligands are minimized by R3P–M bond bending.Keywords
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