Crystal structure of bis(μ(2)-tri-phenyl-acetato-κO:κO')bis(diisobutylaluminium).

Single crystals of the title compound, [Al(iBu)(2)(O(2)CCPh(3))](2) or [Al(2)(C(4)H(9))(4)(C(20)H(15)O(2))(2)], have been formed in the reaction between tris-(tetra-hydro-furan)-tris-(tri-phenyl-acetato)-neodymium, [Nd(Ph(3)CCOO)(3)(THF)(3)], and triiso-butyl-aluminium, Al(iBu)(3), in hexane followed by low-temperature crystallization (243†K) from the reaction mixture. The structure has triclinic (P ) symmetry at 120†K. The dimeric complex [Al(iBu)(2)(O(2)CCPh(3)-μ-κO:κO')](2) is located about an inversion centre. The tri-phenyl-acetate ligand displays a μ-κO:κO'-bridging coordination mode, leading to the formation of an octa-gonal Al(2)O(4)C(2) core. The complex displays H(Ph)⋯C(Ph) inter-molecular inter-actions.