DOI: 10.17188/1190710
title: Materials Data on NaAlGeO4 by Materials Project

description: NaAlGeO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.36–2.98 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Na–O bond distances ranging from 2.39–2.95 Å. In the third Na1+ site, Na1+ is bonded in a 4-coordinate geometry to three O2- atoms. There are a spread of Na–O bond distances ranging from 2.38–2.40 Å. There are three inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four GeO4 tetrahedra. There is three shorter (1.77 Å) and one longer (1.78 Å) Al–O bond length. In the second Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four GeO4 tetrahedra. There is two shorter (1.77 Å) and two longer (1.78 Å) Al–O bond length. In the third Al3+ site, Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four GeO4 tetrahedra. All Al–O bond lengths are 1.77 Å. There are three inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four AlO4 tetrahedra. There is two shorter (1.76 Å) and two longer (1.77 Å) Ge–O bond length. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four AlO4 tetrahedra. All Ge–O bond lengths are 1.77 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four AlO4 tetrahedra. There is one shorter (1.76 Å) and three longer (1.77 Å) Ge–O bond length. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Na1+, one Al3+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Na1+, one Al3+, and one Ge4+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+, one Al3+, and one Ge4+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to two Na1+, one Al3+, and one Ge4+ atom. In the eleventh O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom. In the twelfth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+, one Al3+, and one Ge4+ atom.