Na6ZnSn2 crystallizes in the monoclinic C2/m space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(3) and three equivalent Sn(1) atoms. In the second Na site, Na(2) is bonded in a 1-coordinate geometry to one Na(3) and four equivalent Sn(1) atoms. In the third Na site, Na(3) is bonded in a 11-coordinate geometry to one Na(2), two equivalent Na(1), two equivalent Na(3), three equivalent Zn(1), and three equivalent Sn(1) atoms. Zn(1) is bonded in a 8-coordinate geometry to six equivalent Na(3) and two equivalent Sn(1) atoms. Sn(1) is bonded in a 11-coordinate geometry to three equivalent Na(1), three equivalent Na(3), four equivalent Na(2), and one Zn(1) atom.
Na6ZnSn2 crystallizes in the monoclinic C2/m space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(3) and three equivalent Sn(1) atoms. There is one shorter (3.24 Å) and one longer (3.43 Å) Na(1)-Na(3) bond length. There is one shorter (3.23 Å) and two longer (3.26 Å) Na(1)-Sn(1) bond lengths. In the second Na site, Na(2) is bonded in a 1-coordinate geometry to one Na(3) and four equivalent Sn(1) atoms. The Na(2)-Na(3) bond length is 3.21 Å. There are a spread of Na(2)-Sn(1) bond distances ranging from 3.16-3.72 Å. In the third Na site, Na(3) is bonded in a 11-coordinate geometry to one Na(2), two equivalent Na(1), two equivalent Na(3), three equivalent Zn(1), and three equivalent Sn(1) atoms. Both Na(3)-Na(3) bond lengths are 3.18 Å. There is one shorter (3.09 Å) and two longer (3.42 Å) Na(3)-Zn(1) bond lengths. There are two shorter (3.30 Å) and one longer (3.49 Å) Na(3)-Sn(1) bond length. Zn(1) is bonded in a 8-coordinate geometry to six equivalent Na(3) and two equivalent Sn(1) atoms. Both Zn(1)-Sn(1) bond lengths are 2.56 Å. Sn(1) is bonded in a 11-coordinate geometry to three equivalent Na(1), three equivalent Na(3), four equivalent Na(2), and one Zn(1) atom.