Materials Data on H2PbO2 by Materials Project
Pb(OH)2 crystallizes in the orthorhombic Pnma space group. The structure is one-dimensional and consists of four Pb(OH)2 ribbons oriented in the (1, 0, 0) direction. Pb2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are one shorter (2.19 Å) and two longer (2.54 Å) Pb–O bond lengths. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one H1+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to two equivalent Pb2+ and one H1+ atom.