DOE OSTI2020
(H(PbO)3)2Cl2 crystallizes in the orthorhombic Pmc2_1 space group. The structure is two-dimensional and consists of four hydrochloric acid molecules and one H(PbO)3 sheet oriented in the (0, 1, 0) direction. In the H(PbO)3 sheet, there are six inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are two shorter (2.22 Å) and one longer (2.45 Å) Pb–O bond lengths. In the second Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are two shorter (2.43 Å) and two longer (2.45 Å) Pb–O bond lengths. In the third Pb2+ site, Pb2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are two shorter (2.30 Å) and one longer (2.41 Å) Pb–O bond lengths. In the fourth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to four O2- atoms. There are two shorter (2.42 Å) and two longer (2.43 Å) Pb–O bond lengths. In the fifth Pb2+ site, Pb2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are two shorter (2.25 Å) and one longer (2.38 Å) Pb–O bond lengths. In the sixth Pb2+ site, Pb2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are two shorter (2.30 Å) and one longer (2.37 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 0.99 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 four inequivalent O2- sites. In the first O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of corner and edge-sharing OPb4 tetrahedra. In the second O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of corner and edge-sharing OPb4 tetrahedra. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one H1+ atom.