Fig. 1. Molecular structure of compound 3 in the solid state. Ellipsoids are set at the 50% probability level; hydrogen atoms and co-crystallised solvent molecules are omitted for clarity and NHC ligands are depicted in wireframe for simplicity. Selected bond lengths (Å) and angles (°): Al(1)–Al(2) 2.4039(8), Al(1)–C(16) 2.0596(16), Al(2)–C(42) 2.0422(17), Al(1)–C(1) 2.0292(16), Al(2)–C(27) 2.0180(16), C(16)–Al(1)–Al(2) 119.55(5), C(42)–Al(2)–Al(1) 114.13(5), C(1)–Al(1)–Al(2) 123.56(5), C(27)–Al(2)–Al(1) 129.55(5), C(1)–Al(1)–C(16) 110.28(6), C(27)–Al(2)–C(42) 112.84(7), θ = 17.25, 23.70, τ = 12.06.
