As part of our interest into the bioinorganic chemistry of gallium,
gallium(III) complexes of the azole ligands 2,1,3-benzothiadiazole
(btd), 1,2,3-benzotriazole (btaH), and 1-methyl-4,5-diphenylimidazole
(L) have been isolated. Reaction of btaH or btd with GaBr3 or GaCl3
resulted in the mononuclear complexes [ GaBr3(btaH) 2] (1) and [
GaCl3(btd) 2] (2), respectively, while treatment of GaCl3 with L
resulted in the anionic complex (LH)(2)[GaCl4] (3). All three
complexes were characterized by single-crystal X-ray crystallography and
IR spectroscopy, while their antiproliferative activities were
investigated against a series of human and mouse cancer cell lines