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DOI: 10.1039/A905590H (Paper) Reference Section for: Chem. Commun., 1999, 1717-1718

New products in an old reaction: isomeric products from H2 addition to Vaska’s complex and its analogues

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Sarah K. Hasnip, Simon B. Duckett, Christopher J. Sleigh, Diana R. Taylor, Graham K. Barlow and Mike J. Taylor

Abstract

para-Hydrogen enhanced NMR signals aid detection of minor isomers of complexes IrH2(L)2(CO)Cl (L = PPh3, PMe3, PPh2Cl and AsPh3) containing magnetically inequivalent hydride ligands that are produced via addition across the L–Ir–L axis of Ir(L)2(CO)Cl: in the case of L = PPh3, reaction with CO and H2 is shown to yield the substitution product IrH2(CO)2(PPh3)Cl which reacts further via HCl transfer to form IrH(CO)(PPh3)2Cl2 and thereby enables the detection of IrH3(CO)2(PPh3).

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