Crystal structure of [2,6-bis(adamantan-1-yl)-4-tert-butylphenolato-κO]dimethylaluminium(III)

The title compound, [Al(CH3)2(C30H41O)] is synthesized by the reaction of 2,6-di-adamantyl-4-tert-butyl-phenol with Al(CH3)3 in a nitro-gen atmosphere. In the mol-ecule, the coordination geometry around the Al(III) atom is slightly distorted C2O trigonal (the sum of the bond angles subtended at Al atom being 359.9°), which is rarely reported for organometallic aluminium compounds. The coordination plane is approximately perpendicular to the benzene ring [the dihedral angle = 87.73 (16)°]. There is no inter-molecular hydrogen bonding in the crystal structure.