Materials Data on HgTe(HO)7 by Materials Project
HgH5TeO6H2O crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of two water molecules and one HgH5TeO6 ribbon oriented in the (0, 1, 1) direction. In the HgH5TeO6 ribbon, Hg1+ is bonded in a distorted single-bond geometry to one O2- atom. The Hg–O bond length is 2.18 Å. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.64 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. There are two inequivalent Te6+ sites. In the first Te6+ site, Te6+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Te–O bond distances ranging from 1.93–1.98 Å. In the second Te6+ site, Te6+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Te–O bond distances ranging from 1.90–2.02 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Te6+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one H1+ and one Te6+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Te6+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Hg1+, one H1+, and one Te6+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one H1+ and one Te6+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one H1+ and one Te6+ atom.