Nine heterobimetallic homoleptic diethanolaminate complexes of the types: [Nb(Rdea)3{Ta(Rdea)2}] (where Rdea = RN(CH2CH2O-)2 and R = H, 2; Me, 3; Bun, 4; Ph, 5), [Nb(Rdea)3{Al(Rdea)}] (R = H, 6; Me, 7; Bun, 8; Ph, 9), and [Nb(Phdea)3{Sb(Phdea)}] 10 have been prepared for the first time by the equimolar reactions of [Nb(Rdea)2(RdeaH)] with [Ta(Rdea)2(OPri)] or [Al(Rdea)(OPri)] or [Sb(Phdea)(OPri)] in benzene. The structural features of the new complexes have been elucidated by IR and NMR (1H, 27Al) spectroscopies.
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