Reaction of AlMe3 with NH2(C5H9) caused the evolution of methane and produc
ed the dimeric species bis(mu-cyclopentylamino-N:N)bis bis[dimethylaluminiu
m(III)], [Al(CH3)(2)(C5H10N)], which was found to adopt a cis configuration
of cyclopentyl groups about a bent AlNAlN ring (which has twofold crystall
ographic symmetry) instead of the more common trans arrangement.