Innersphere and structure transformations in diaminodihalopiatinites aaccording to NQR

Using NQR we have studied the complexes PtL2X2 (L = C5H5N, NH3, CH3NH2, C2H5NH2; X = Br, I). The formation of cis-isomers by these compounds was reported to be thermodynamically unfavourable (ref. 1) so they undergo cis-trans isomerization when heated. This was completely confirmed by NQR. Cis-isome...

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Bibliographic Details
Published in:Journal of molecular structure 1982, Vol.83, p.163-166
Main Authors: Kravchenko, E.A., Morgunov, V.G., Gelf́man, M.I.
Format: Article
Language:English
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Summary:Using NQR we have studied the complexes PtL2X2 (L = C5H5N, NH3, CH3NH2, C2H5NH2; X = Br, I). The formation of cis-isomers by these compounds was reported to be thermodynamically unfavourable (ref. 1) so they undergo cis-trans isomerization when heated. This was completely confirmed by NQR. Cis-isomers of most of the iodides appeared to be essentially thermodynamically unstable. Slow changes consisting of gradual alteration of widths and amplitudes of resonances could be observed in their 127I NQR spectra, for many hours after preparation. Apart from the earlier reported cis-trans rearrangement of ligands on heating (refs. 1,2) we detected some more transformations unknown before which occured at room or at elevated temperature.
ISSN:0022-2860
DOI:10.1016/0022-2860(82)85177-6