Abstract
The title compound, {(C(2)H(8)NO)(2)[PbI(4)]} (n) , represents a layered organic-inorganic perovskite, crystallizing in space group C2/c. The asymmetric unit comprises one N,O-di-methyl-hydroxyl-ammonium cation, one Pb(2+) cation located on a twofold rotation axis, and two iodide anions. The Pb(2+) cation is coordinated by six iodido ligands, generating a slightly distorted octa-hedral {PbI(6)} unit. The octa-hedra are connected by corner-sharing of equatorial I(-) ligands to form polymeric inorganic sheets extending parallel to the ab plane. These sheets are separated by double layers of the organic cations, producing a typical di-periodic perovskite-type arrangement with stacking of the layers along the c axis. Neighbouring inorganic layers are shifted relative to each other along both the a and b axes. The N,O-di-methyl-hydroxyl-ammonium cation engages in two N-H⋯I hydrogen bonds directed toward axially bound iodido ligands, which consolidates the packing of the crystal structure.