The crystal structure of AlCl2CH3 dimer

This is the authors' abstract. We don't add key points for this paper.

The X‐Ray crystal structure refinement of (AlCl2CH3)2 is described in this paper; itsknowledge may be of interest because it is well known that the organometallic alluminium compounds may be used for the preparation of catalytic systems in certain stereospecific polymerizations. The space group has resulted to be C2/c; the dimeric molecules, with chlorine bridges, are placed on crystallographic symmetry centres, thus giving rise to a “trans” molecular configuration. The tetrahedral coordination around aluminum atoms results to be distorted so that, in particular, the value of the angle (bridged chlorine atoms) approaches 90°. Al—Cl distances to bridged chlorine atoms result, as it was expected, to be longer (2.25 ± 0.01 Å) than the corresponding distances to non‐bridged atoms (2.05 ± 0.01 Å).