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Square-planar complexes of the type RZMX (M = Pt or Pd), containing the terdentate ligand 2,6-(Me,NCH,),C,H,, undergo with Me1 (M = Pt, X = BF,) oxidative addition and consecutive reductive elimination resulting in the formation of the complex BF,-[IPtgR-Me]+ in which the C-aryl centre, a t which C-C coupling has occurred, is bonded to the cationic Pt-centre by a novel Pt-to-C-interaction.

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Insertion of isocyanides into the Cu-C bond of arylcopper ( I) compounds affords novel, thermally stable a-cupriobenzylideneamines.RECENTLY we reported the isolation and characterization of thermally, oxidatively, and hydrolytically stable arylcopper(1) compounds which contain, preferably in the ortho position, hetero-atom containing substituents (e.g. NMe,, OMe, CH,-NMe,, and CH,.OMe).l We have now found that these compounds readily react with isocyanides to afford a-cupriobenzylideneamines instead of organocopper isocyanide complexes. t The observed insertion reaction represents a novel reaction type in organometallic chemistry of Group IB elements.

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