Synthesis and characterization of adducts of R 3M (R  Me, M  Al, Ga In) with 5,6-benzoquinoline: X-ray crystal structures of Me 3GaBQ and ClMe 2AlBQ (BQ = 5,6-benzoquinoline)

Abstract

The reaction of R 3M and AlMe 2Cl with 5,6-benzoquinoline (BQ) gave the Lewis acid-base adducts R 3MBQ [R  Me, M  Al ( 1), Ga ( 2), In ( 3) and ClMe 2AlBQ ( 4). These adducts are much less air- and water-sensitive than the metal trialkyls and AlMe 2Cl. All the compounds were characterized by elemental analyses, IR, NMR and mass spectroscopy. The X-ray crystal structures of 2 and 4 showed that gallium and aluminium atoms in the molecule were tetrahedrally coordinated.