Fig. 1. Molecular structures of 1 (left) and 2 (right) with ellipsoids at the 50% probability level. All hydrogen atoms except H1 and H2 are omitted for clarity in 1. All hydrogen atoms along with toluene (solvent of crystallization) are omitted for clarity in 2. The terphenyl substituent in 1 and 2 is depicted in wireframe style for simplicity. Selected bond lengths [Å] and bond angles [°] for 1: Al1–C1 2.040(8), Al1–C2 2.028(1); C1–Al1–C2 106.9(5); for 2: Al1–C1 2.033(6), Al1–C2 1.994(6); C1–Al1–C2 114.2(3).