Materials Data on GeSb3 by Materials Project
GeSb3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ge3+ is bonded to twelve equivalent Sb1- atoms to form distorted GeSb12 cuboctahedra that share corners with six equivalent GeSb12 cuboctahedra, corners with twelve equivalent SbGe4Sb8 cuboctahedra, edges with eighteen equivalent SbGe4Sb8 cuboctahedra, faces with eight equivalent GeSb12 cuboctahedra, and faces with twelve equivalent SbGe4Sb8 cuboctahedra. There are six shorter (3.23 Å) and six longer (3.35 Å) Ge–Sb bond lengths. Sb1- is bonded to four equivalent Ge3+ and eight equivalent Sb1- atoms to form distorted SbGe4Sb8 cuboctahedra that share corners with four equivalent GeSb12 cuboctahedra, corners with fourteen equivalent SbGe4Sb8 cuboctahedra, edges with six equivalent GeSb12 cuboctahedra, edges with twelve equivalent SbGe4Sb8 cuboctahedra, faces with four equivalent GeSb12 cuboctahedra, and faces with sixteen equivalent SbGe4Sb8 cuboctahedra. There are a spread of Sb–Sb bond distances ranging from 3.20–3.50 Å.