The crystal structure of (tert-butyl isocyanide-κC)trichloridogallium(III), [GaCl3(C5H9N)], features the first reported isocyanide–gallium trihalide complex. The Ga—C—N—C fragment is essentially linear. The methyl fragments of the tert-butyl group are eclipsed with the chloride ligands on the Ga atom. The molecule does not, however, exhibit threefold crystallographic symmetry, as it crystallizes within the P21/c space group.
