BaZn2Sn2 crystallizes in the tetragonal P4/nmm space group. Ba(1) is bonded in a 16-coordinate geometry to four equivalent Zn(1), four equivalent Zn(2), four equivalent Sn(1), and four equivalent Sn(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Sn(1), and four equivalent Sn(2) atoms. In the second Zn site, Zn(2) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Zn(1), and four equivalent Zn(2) atoms. In the second Sn site, Sn(2) is bonded to four equivalent Ba(1) and four equivalent Zn(1) atoms to form a mixture of distorted edge and face-sharing SnBa4Zn4 tetrahedra.
BaZn2Sn2 crystallizes in the tetragonal P4/nmm space group. Ba(1) is bonded in a 16-coordinate geometry to four equivalent Zn(1), four equivalent Zn(2), four equivalent Sn(1), and four equivalent Sn(2) atoms. All Ba(1)-Zn(1) bond lengths are 3.66 Å. All Ba(1)-Zn(2) bond lengths are 3.62 Å. All Ba(1)-Sn(1) bond lengths are 3.62 Å. All Ba(1)-Sn(2) bond lengths are 3.77 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Sn(1), and four equivalent Sn(2) atoms. The Zn(1)-Sn(1) bond length is 2.69 Å. All Zn(1)-Sn(2) bond lengths are 2.83 Å. In the second Zn site, Zn(2) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Sn(1) atoms. All Zn(2)-Sn(1) bond lengths are 2.78 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to four equivalent Ba(1), one Zn(1), and four equivalent Zn(2) atoms. In the second Sn site, Sn(2) is bonded to four equivalent Ba(1) and four equivalent Zn(1) atoms to form a mixture of distorted edge and face-sharing SnBa4Zn4 tetrahedra.