Abstract:A synthetic methodology to obtain square-planar carbenerhodium (1)

Abstract:The reaction of [IrH,Cl(PiPr,),]

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The dichloro(dihydrido)osmium(iv) and dichloroosmium(ii) compounds 4 and 5, which contain the hemilabile chelating phosphinoester Pri2PCH,C0,Me 2 as ligand, react with alkynols HC-CCPh(R)OH (R = Me, Ph) to give the octahedral carbynedichloroosmium(ii) complexes 7 and 8 ; the related starting material 6 with Pri2PCH2CH2NMe2 3 as ligand on treatment with HC-CCPh20H yields a carbyne(dich1oro)hydrido compound, and with HC-CPh a vinylidene osmium(ii) derivative.