Abstract
13 C N.m.r. chemical shifts, δ, and 1J(195Pt–13C) coupling constants have been obtained for a series of anionic, neutral, and cationic platinum(II) carbonyl complexes incorporating 13CO. In the series [PtX(CO)L,L′] with the group X trans to the labelled carbonyl group, for constant X a decrease in δ has been observed for the 13CO with increasing negative charge on the complex. Little variation in δ has been observed with change in the cis-ligand. Two ranges of values for 1J(195Pt–13C) have been obtained for variation of trans-group X: for ligands with high trans-influence the coupling is in the range 960–990 Hz, whilst for ligands with low trans-influence the coupling falls in the region 1 658–1 817 Hz.
Published Version
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