Abstract

The structure and dynamic behavior of complex [(η 5-C 5H 4CH 3)Cr(CO) 2(μ-SBu)Pt(PPh 3) 2] in solution was studied by multinuclear ( 1H, 13C, 31P) NMR spectroscopy including a phase-sensitive NOESY experiment. Increasing temperature causes rupture of the Cr–Pt bond in the three-membered ring of the complex and rotation of the S–Pt(PPh 3) 2 unit around the Cr–S bond line, followed by formation of a new Cr–Pt bond to close the ring. All activation parameters for this dynamic process have been determined.

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