Mn2CoSb crystallizes in the cubic F-43m space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to four equivalent Mn(2) and four equivalent Sb(1) atoms to form distorted edge-sharing MnMn4Sb4 tetrahedra. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to four equivalent Mn(1), four equivalent Co(1), and six equivalent Sb(1) atoms. Co(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(2) and four equivalent Sb(1) atoms. Sb(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(1), six equivalent Mn(2), and four equivalent Co(1) atoms.
Mn2CoSb crystallizes in the cubic F-43m space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to four equivalent Mn(2) and four equivalent Sb(1) atoms to form distorted edge-sharing MnMn4Sb4 tetrahedra. All Mn(1)-Mn(2) bond lengths are 2.59 Å. All Mn(1)-Sb(1) bond lengths are 2.59 Å. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to four equivalent Mn(1), four equivalent Co(1), and six equivalent Sb(1) atoms. All Mn(2)-Co(1) bond lengths are 2.59 Å. All Mn(2)-Sb(1) bond lengths are 3.00 Å. Co(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(2) and four equivalent Sb(1) atoms. All Co(1)-Sb(1) bond lengths are 2.59 Å. Sb(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(1), six equivalent Mn(2), and four equivalent Co(1) atoms.