Materials Data on Na2ZrCd(CO3)8 by Materials Project

Abstract

Na2ZrCd(C2O5)4(O2)2 crystallizes in the hexagonal P6_222 space group. The structure is three-dimensional and consists of twelve water molecules and one Na2ZrCd(C2O5)4 framework. In the Na2ZrCd(C2O5)4 framework, there are two inequivalent Na sites. In the first Na site, Na is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.58 Å) and four longer (2.66 Å) Na–O bond lengths. In the second Na site, Na is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.53 Å) and four longer (2.67 Å) Na–O bond lengths. Zr is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.21 Å) and four longer (2.25 Å) Zr–O bond lengths. Cd is bonded in a 8-coordinate geometry to eight O atoms. There are four shorter (2.40 Å) and four longer (2.43 Å) Cd–O bond lengths. There are two inequivalent C sites. In the first C site, C is bonded in a distorted bent 120 degrees geometry to two O atoms. There is one shorter (1.25 Å) and one longer (1.28 Å) C–O bond length. In the second C site, C is bonded in a distorted bent 120 degrees geometry to two O atoms. There is one shorter (1.24 Å) and one longer (1.28 Å) C–O bond length. There are five inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one Na, one Cd, and one C atom. In the second O site, O is bonded in a bent 120 degrees geometry to one Zr and one C atom. In the third O site, O is bonded in a bent 120 degrees geometry to two Na atoms. In the fourth O site, O is bonded in a distorted trigonal planar geometry to one Na, one Zr, and one C atom. In the fifth O site, O is bonded in a distorted bent 120 degrees geometry to one Cd and one C atom.