CaMnSb2 is Parent of FeAs superconductors-derived structured and crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded to four equivalent Mn(1), four equivalent Sb(1), and four equivalent Sb(2) atoms to form distorted CaMn4Sb8 cuboctahedra that share corners with four equivalent Ca(1)Mn4Sb8 cuboctahedra, corners with eight equivalent Mn(1)Ca4Sb4 tetrahedra, edges with eight equivalent Ca(1)Mn4Sb8 cuboctahedra, edges with four equivalent Mn(1)Ca4Sb4 tetrahedra, and faces with four equivalent Ca(1)Mn4Sb8 cuboctahedra. Mn(1) is bonded to four equivalent Ca(1) and four equivalent Sb(2) atoms to form distorted MnCa4Sb4 tetrahedra that share corners with eight equivalent Ca(1)Mn4Sb8 cuboctahedra, edges with four equivalent Ca(1)Mn4Sb8 cuboctahedra, edges with four equivalent Mn(1)Ca4Sb4 tetrahedra, and faces with four equivalent Mn(1)Ca4Sb4 tetrahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to four equivalent Ca(1) and four equivalent Sb(1) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Ca(1) and four equivalent Mn(1) atoms.
CaMnSb2 is Parent of FeAs superconductors-derived structured and crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded to four equivalent Mn(1), four equivalent Sb(1), and four equivalent Sb(2) atoms to form distorted CaMn4Sb8 cuboctahedra that share corners with four equivalent Ca(1)Mn4Sb8 cuboctahedra, corners with eight equivalent Mn(1)Ca4Sb4 tetrahedra, edges with eight equivalent Ca(1)Mn4Sb8 cuboctahedra, edges with four equivalent Mn(1)Ca4Sb4 tetrahedra, and faces with four equivalent Ca(1)Mn4Sb8 cuboctahedra. There are two shorter (3.50 Å) and two longer (3.51 Å) Ca(1)-Mn(1) bond lengths. There are a spread of Ca(1)-Sb(1) bond distances ranging from 3.33-3.36 Å. There are two shorter (3.30 Å) and two longer (3.31 Å) Ca(1)-Sb(2) bond lengths. Mn(1) is bonded to four equivalent Ca(1) and four equivalent Sb(2) atoms to form distorted MnCa4Sb4 tetrahedra that share corners with eight equivalent Ca(1)Mn4Sb8 cuboctahedra, edges with four equivalent Ca(1)Mn4Sb8 cuboctahedra, edges with four equivalent Mn(1)Ca4Sb4 tetrahedra, and faces with four equivalent Mn(1)Ca4Sb4 tetrahedra. All Mn(1)-Sb(2) bond lengths are 2.70 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to four equivalent Ca(1) and four equivalent Sb(1) atoms. There are two shorter (3.00 Å) and two longer (3.20 Å) Sb(1)-Sb(1) bond lengths. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Ca(1) and four equivalent Mn(1) atoms.