Ca3SnH2 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 4-coordinate geometry to two equivalent Sn(1) and four equivalent H(1) atoms. In the second Ca site, Ca(2) is bonded in a 2-coordinate geometry to three equivalent Sn(1) and two equivalent H(1) atoms. Sn(1) is bonded in a 8-coordinate geometry to two equivalent Ca(1) and six equivalent Ca(2) atoms. H(1) is bonded to two equivalent Ca(1) and two equivalent Ca(2) atoms to form a mixture of corner and edge-sharing HCa4 tetrahedra.
Ca3SnH2 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 4-coordinate geometry to two equivalent Sn(1) and four equivalent H(1) atoms. Both Ca(1)-Sn(1) bond lengths are 3.45 Å. All Ca(1)-H(1) bond lengths are 2.26 Å. In the second Ca site, Ca(2) is bonded in a 2-coordinate geometry to three equivalent Sn(1) and two equivalent H(1) atoms. There are two shorter (3.31 Å) and one longer (3.45 Å) Ca(2)-Sn(1) bond length. Both Ca(2)-H(1) bond lengths are 2.23 Å. Sn(1) is bonded in a 8-coordinate geometry to two equivalent Ca(1) and six equivalent Ca(2) atoms. H(1) is bonded to two equivalent Ca(1) and two equivalent Ca(2) atoms to form a mixture of corner and edge-sharing HCa4 tetrahedra.