The title structure, ,4,5,6-tetrachloro-1,2-benzenediolato-O,O')iridiu
m butanol hemisolvate, [IrCl(C6Cl4O2)(C19H15OP)(C21H20NP)].0.5C4H10O,
consists of two independent molecules in the asymmetric unit with an I
r(III) metal atom pseudo octahedrally coordinated by the following don
ors: two catecholate 0 atoms, one Cl- anion, two phosphine groups and
one imino group.