Crystal structures of three para-substituted-styryl(pyridyl)platinum(II) complexes; effect of substituent on molecular geometry
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 19,p. 1865-1870
- https://doi.org/10.1039/dt9760001865
Abstract
X-Ray crystal-structure analysis has been carried out on three square-planar para-substituted-styryl(pyridyl)platinum(II) complexes [(p-YC6H4CH:CH2)PtCl2(NC2H4X)] where (I) Y = NMe2. X = Me: (II) Y = H, X = Me; and (III) Y = NO2, X = Cl. The distances of the platinum atom from the two ethylenic carbon atoms are well correlated with the n.m.r. 195Pt–13C coupling constants when both are plotted vs. σp +, a measure of electron-donating power of the substituent Y. Both this, and the deviation of the co-ordination plane from the ethylenic bond, can be given a simple valence-bond explanation.Keywords
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