The Crystal Structures of R3CuSnS7 (R = La-Nd, Sm, Gd-Ho)

Crystal structures of R3CuSnS7 (R = La–Nd, Sm, Gd–Ho) (La3CuSiS7 structure type, space group P63, Pearson symbol hP24) were determined by means of X‐ray single crystal diffraction (a = 1.0317(1) nm, c = 0.60274(7) nm, R1 = 0.0202 for La3CuSnS7; a = 1.0209(1) nm, c = 0.60150(7) nm, R1 = 0.0273 for Ce3CuSnS7; a = 1.0075(1) nm, c = 0.60212(6) nm, R1 = 0.0224 for Nd3CuSnS7) and X‐ray powder diffraction (a = 1.01417(2) nm, c = 0.60210(2) nm, RBragg = 0.0824 for Pr3CuSnS7; a = 0.99288(2) nm, c = 0.60800(2) nm, RBragg = 0.0926 for Sm3CuSnS7; a = 0.98087(3) nm, c = 0.61511(3) nm, RBragg = 0.0885 for Gd3CuSnS7; a = 0.97512(2) nm, c = 0.61573(2) nm, RBragg = 0.0904 for Tb3CuSnS7; a = 0.97024(2) nm, c = 0.61694(2) nm, RBragg = 0.0918 for Dy3CuSnS7; a = 0.96527(2) nm, c = 0.61731(2) nm, RBragg = 0.0864 for Ho3CuSnS7). The structures are built up from columns of distorted face‐sharing sulfur anticuboctahedra arranged along the c‐axis. The columns are connected with each other via common edges. The remaining atoms are located in the intercolumnar channels.