SnCo2 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent Co(2) and five equivalent Sn(1) atoms to form a mixture of distorted corner and face-sharing CoCo6Sn5 trigonal bipyramids. In the second Co site, Co(2) is bonded in a 14-coordinate geometry to two equivalent Co(2), six equivalent Co(1), and six equivalent Sn(1) atoms. Sn(1) is bonded in a 11-coordinate geometry to five equivalent Co(1) and six equivalent Co(2) atoms.
SnCo2 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to six equivalent Co(2) and five equivalent Sn(1) atoms to form a mixture of distorted corner and face-sharing CoCo6Sn5 trigonal bipyramids. All Co(1)-Co(2) bond lengths are 2.79 Å. There are three shorter (2.47 Å) and two longer (2.62 Å) Co(1)-Sn(1) bond lengths. In the second Co site, Co(2) is bonded in a 14-coordinate geometry to two equivalent Co(2), six equivalent Co(1), and six equivalent Sn(1) atoms. Both Co(2)-Co(2) bond lengths are 2.62 Å. All Co(2)-Sn(1) bond lengths are 2.79 Å. Sn(1) is bonded in a 11-coordinate geometry to five equivalent Co(1) and six equivalent Co(2) atoms.