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Preparative and spectroscopic studies of [PtCl 3 (4-XC 6 H 4 NO)] − K + complexes

Polyhedron, ISSN: 0277-5387, Vol: 17, Issue: 20, Page: 3495-3500
1998
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σ N -Coordinated compounds [PtCl 3 (4-X-C 6 H 4 NO)] - K + have been prepared and studied by 13 C NMR spectroscopy and by variable temperature 1 H NMR spectroscopy. It is shown that the anomalous behaviour of the NO group on the 13 C chemical shifts is modified by coordination but where X = N(CH 3 ) 2 or OCH 3 the free energy barriers to rotation of the NO group determined by 1 H NMR studies are closely similar to those of the free ligands. Restricted rotation of the N(CH 3 ) 2 group was also studied in [PtCl 3 (2-CH 3 -4-N(CH 3 ) 2 -C 6 H 3 NO)] − K +.

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