catena-Poly[bis(tert-butylammonium) [plumbate(II)-tri-μ-iodo] iodide dihydrate]

The title compound, {(C4H12N)2[PbI3]I·2H2O}n, crystallizes as an organic–inorganic hybrid. The six-coordinate Pb atom lies on a centre of inversion and all the I atoms lie on mirror planes; the two independent cations both lie across mirror planes. The structure contains anionic chains along [100] of fused [PbI3]− units forming face-sharing octa­hedra. Four cations enclose channels occupied by isolated iodide ions and water mol­ecules of hydration.