Nuclear magnetic resonance investigations of configurational nonrigidity in dinuclear platinum(IV) complexes. Part 1. Ring reversal, pyramidal inversion, and novel fluxional rearrangements in [(PtXMe3)2(MeECHREMe)](E = S or Se) complexes
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 11,p. 2208-2219
- https://doi.org/10.1039/dt9800002208
Abstract
Dinuclear complexes of the type DL-[(PtXMe3)2(MeECHREMe)](E = S or Se; X = Cl, Br, or I; R = H or Me) have been isolated for the first time and shown by 1H n.m.r. spectroscopy to exhibit a remarkable variety of intramolecular dynamic processes. Accurate n.m.r. bond-shape fittings have enabled barrier energies for up to four distinct dynamic processes to be separately determined. These processes involve six-membered ligand ring reversal, pyramidal inversion of the S or Se atoms, S or Se atom switching between Pt atom pairs, and a random cleavage of halogen-bridge bonds allowing rotations which cause scrambling of the Pt–Me environments.Keywords
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