Materials Data on NaSb2(OF3)2 by Materials Project
NaSb2(OF3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na is bonded in a 7-coordinate geometry to one O and six F atoms. The Na–O bond length is 2.35 Å. There are a spread of Na–F bond distances ranging from 2.34–2.80 Å. There are two inequivalent Sb sites. In the first Sb site, Sb is bonded to one O and four F atoms to form distorted SbOF4 square pyramids that share a cornercorner with one SbO2F3 trigonal bipyramid and an edgeedge with one SbOF4 square pyramid. The Sb–O bond length is 1.96 Å. There are a spread of Sb–F bond distances ranging from 1.92–2.20 Å. In the second Sb site, Sb is bonded to two O and three F atoms to form corner-sharing SbO2F3 trigonal bipyramids. There is one shorter (1.85 Å) and one longer (2.00 Å) Sb–O bond length. There are a spread of Sb–F bond distances ranging from 1.92–1.98 Å. There are two inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to two Sb atoms. In the second O site, O is bonded in a bent 150 degrees geometry to one Na and one Sb atom. There are six inequivalent F sites. In the first F site, F is bonded in a 3-coordinate geometry to two equivalent Na and one Sb atom. In the second F site, F is bonded in a single-bond geometry to one Sb atom. In the third F site, F is bonded in a bent 120 degrees geometry to one Na and one Sb atom. In the fourth F site, F is bonded in a water-like geometry to one Na and one Sb atom. In the fifth F site, F is bonded in a bent 120 degrees geometry to two equivalent Sb atoms. In the sixth F site, F is bonded in a 3-coordinate geometry to two equivalent Na and one Sb atom.