Materials Data on PbI2 by Materials Project
PbI2 is trigonal omega-like structured and crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three PbI2 sheets oriented in the (0, 0, 1) direction. Pb2+ is bonded to six equivalent I1- atoms to form edge-sharing PbI6 octahedra. All Pb–I bond lengths are 3.28 Å. I1- is bonded in a distorted T-shaped geometry to three equivalent Pb2+ atoms.