Crystal structure of hexaglycinium dodecaiodotriplumbate

Abstract

The crystal structure of hexaglycinium tetra-μ-iodido-octaiodidotriplumbate, (C2H6NO2)6[Pb3I12] or (GlyH)6[Pb3I12], is reported. The compound crystallizes in the triclinic space group P\overline{1}. The [Pb3I12]6− anion is discrete and located around a special position: the central Pb ion located on the inversion center is holodirected, while the other two are hemidirected. The supramolecular nature is mainly based on C—H...I, N—H...I, O—H...I and N—H...O hydrogen bonds. Dimeric cations of type (A +...A +) for the amino acid glycine are observed for the first time.