The compound trimesitylgallium (II1)(GaMes3) has been prepared and fully characterized by elemental analysis, IR and'H NMR data, Lewis acid-base studies, and an X-ray structural study. Trimesityl allium (II1) crystallizes in the centrosymmetric trigonal space group e (No. 147) with a= 13.415 (4) l, c= 7.628 (2) A, and p (ca1cd)= 1.19 g cm-3 for M, 427.3 and 2= 2. Single-crystal X-ray diffraction data (Mo Ka, 28= 4.0-40.0 O) were collected with a Syntex ...