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DOI: 10.1039/A702940C (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 3349-3352

N,N′-Diphenylguanidinato complexes of ruthenium, osmium and iridium[hair space]*

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Stephen D. Robinson and Arvind Sahajpal

Abstract

N,N[hair space]′-Diphenylguanidine reacted with the hydrido complexes [MH2(CO)(PPh3)3] (M = Ru or Os) and mer-[IrH3(PPh3)3] in boiling toluene to afford the complexes [MH{PhNC(NH2)NPh}(CO)(PPh3)2] and [IrH2{PhNC(NH2)NPh}(PPh3) 2] in which the N,N[hair space]′-diphenylguanidinate anions adopt a symmetrical chelate co-ordination mode. Under similar conditions the trifluoroacetato complexes [M(O2CCF3)2(CO)(PPh3) 2] afforded salts [M{PhNC(NH2)NPh}{PhNC(NH2)NPh ·H}(CO)(PPh3)2][O2CCF 3] containing one chelate N,N[hair space]′-diphenylguanidinate anion and one monodentate N,N[hair space]′-diphenylguanidine ligand. Spectroscopic evidence indicates that the trifluoroacetate anions are hydrogen bonded to one or more of the N-bound hydrogens.

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