[(C₅H₅)CO{P(0)(0C₂H₅)₂}₃]-: Eine einfache Synthese eines metallorganischen Tripodliganden und seine Reaktivität gegenüber den Kationen der III. Hauptgruppe / [(C₅H₅)CO{P(0)(0C₂H₅)₂}₃]-: A Convenient Synthesis of an Organometallic Tripod Ligand and its Reactivity towards the Main Group III Cations

A simple two step synthesis of the salts M[(C 5 H 5 )Co{P(0)(OC 2 H 5 ) 2 } 3 ], M = Li, Na, K, Ag, NH 4 , NMe 4 is described. The air stable, diamagnetic anion reacts as a tridentate 0,0,0-chelating ligand with all main group III elements. With sodium tetraphenylborate the cage-like cationic complex [(C 5 H 5 )Co{[P(0)(OC 2 H 5 ) 2 ] 3 BPh}] + is obtained. With M(III) = Al,Ga, In, Tithe trinuclear sandwich compounds [{(C 5 H 5 )Co[P(0)(OC 2 H 5 ) 2 ] 3 } 2 M] + are formed, which contain MO 6 octahedra. With M(III) = TI a coupling constant 6 J(T10P0CCH) = 1.0 Hz is observed.