Nuclear magnetic resonance investigations of configurational nonrigidity in dinuclear platinum(IV) complexes. Part 2. Pyramidal inversion and novel fluxional rearrangements in [(PtXMe3)2(MeEEMe)](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. 2220-2227
- https://doi.org/10.1039/dt9800002220
Abstract
New complexes of the type DL-[(PtXMe3)2(MeEEMe)](E = S or Se; X = Cl, Br, or I) have been isolated and shown by both X-ray and 1H n.m.r. data to possess dinuclear structures involving halogen-bridge bonds. Barrier energies for (i) pyramidal inversion of S or Se atoms, (ii) S or Se atom switching between Pt atom pairs, and (iii) scrambling of PtMe groups, have been separately evaluated by dynamic n.m.r. methods. The relative probabilities of simultaneous and non-simultaneous mechanisms for the inversion of pairs of chalcogen atoms are assessed.Keywords
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