DOI: 10.17188/1690802
title: Materials Data on Nd(BO2)9 by Materials Project

description: Nd(BO2)9 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Nd is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Nd–O bond distances ranging from 2.43–2.64 Å. There are nine inequivalent B sites. In the first B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.45–1.49 Å. In the second B site, B is bonded in a trigonal planar geometry to three O atoms. There is two shorter (1.38 Å) and one longer (1.39 Å) B–O bond length. In the third B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.46–1.48 Å. In the fourth B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.43–1.53 Å. In the fifth B site, B is bonded in a trigonal planar geometry to three O atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. In the sixth B site, B is bonded in a trigonal planar geometry to three O atoms. There is two shorter (1.37 Å) and one longer (1.38 Å) B–O bond length. In the seventh B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.55 Å. In the eighth B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.36–1.40 Å. In the ninth B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.44–1.52 Å. There are eighteen inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the second O site, O is bonded in a distorted single-bond geometry to one Nd, one B, and one O atom. The O–O bond length is 2.03 Å. In the third O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the fourth O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the fifth O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the seventh O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the eighth O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the ninth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the tenth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the eleventh O site, O is bonded in a trigonal planar geometry to three B atoms. In the twelfth O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the thirteenth O site, O is bonded in a distorted water-like geometry to one Nd and one B atom. In the fourteenth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the fifteenth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the sixteenth O site, O is bonded in a distorted bent 120 degrees geometry to one Nd and two B atoms. In the seventeenth O site, O is bonded in a single-bond geometry to one B atom. In the eighteenth O site, O is bonded in a single-bond geometry to one O atom.