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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on H2O by Materials Project

H2O is beta Tridymite structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of eight water molecules. 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 1.00 Å. 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. O2- is bonded in a water-like geometry to two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H2O by Materials Project

H2O is Lonsdaleite structured and crystallizes in the hexagonal P6_3cm space group. The structure is zero-dimensional and consists of twelve water molecules. there are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. O2- is bonded in a water-like geometry to two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H2O by Materials Project

H2O crystallizes in the orthorhombic Ibam space group. The structure is two-dimensional and consists of four hydrogen molecules and two H7O4 sheets oriented in the (0, 1, 0) direction. In each H7O4 sheet, there are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted bent 150 degrees geometry to one H1+ and two equivalent O2- atoms. The H–H bond length is 1.27 Å. Both H–O bond lengths are 1.23 Å. In the second H1+ site, H1+ is bonded in a bent 150 degrees geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.23 Å. In the third H1+ site, H1+ is bonded in a 2-coordinate geometry to two equivalent H1+ and four equivalent O2- atoms. All H–O bond lengths are 1.62 Å. In the fourth H1+ site, H1+ is bonded in a linear geometry to two equivalent O2- atoms. Both H–O bond lengths are 1.21 Å. O2- is bonded in a distorted T-shaped geometry to four H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H2O by Materials Project

H2O crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two hydrogen molecules, six water molecules, two water molecules, and two water water molecules.

36 MATERIALS SCIENCE↗