Novel supramolecular architectures in group 13 perfluoroaryl complexes. Synthesis and structures of [AlMe(C6F5)(µ-Me)]2 and GaMe(C6F5)2Electronic supplementary information (ESI) available: Experimental procedures for the preparation of 1 and 2 and X-ray experimental details. See http://www.rsc.org/suppdata/cc/b2/b210024j/