Materials Data on Ce2Zn2Sn2H3 by Materials Project

Abstract

Ce2Zn2Sn2H3 crystallizes in the hexagonal P6_3mc space group. The structure is two-dimensional and consists of two Ce2Zn2Sn2H3 sheets oriented in the (0, 0, 1) direction. there are two inequivalent Ce sites. In the first Ce site, Ce is bonded in a hexagonal planar geometry to six H atoms. There are three shorter (2.55 Å) and three longer (2.56 Å) Ce–H bond lengths. In the second Ce site, Ce is bonded in a distorted trigonal planar geometry to three equivalent Sn and three equivalent H atoms. All Ce–Sn bond lengths are 3.25 Å. All Ce–H bond lengths are 2.54 Å. There are two inequivalent Zn sites. In the first Zn site, Zn is bonded in a distorted single-bond geometry to three equivalent Sn and one H atom. All Zn–Sn bond lengths are 2.56 Å. The Zn–H bond length is 1.87 Å. In the second Zn site, Zn is bonded in a distorted single-bond geometry to three equivalent Sn and one H atom. All Zn–Sn bond lengths are 2.57 Å. The Zn–H bond length is 1.83 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 3-coordinate geometry to three equivalent Zn atoms. In the second Sn site, Sn is bonded in a 3-coordinate geometry to three equivalent Ce and three equivalent Zn atoms. There are three inequivalent H sites. In the first H site, H is bonded to three equivalent Ce and one Zn atom to form a mixture of distorted edge and corner-sharing HCe3Zn trigonal pyramids. In the second H site, H is bonded in a distorted trigonal planar geometry to three equivalent Ce atoms. In the third H site, H is bonded to three equivalent Ce and one Zn atom to form a mixture of distorted edge and corner-sharing HCe3Zn trigonal pyramids.