Mn20(WC2)3 crystallizes in the cubic Fm-3m space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a cuboctahedral geometry to twelve equivalent Mn(2) atoms. In the second W site, W(2) is bonded in a distorted tetrahedral geometry to four equivalent Mn(1) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one W(2) and three equivalent C(1) atoms to form a mixture of distorted corner and edge-sharing MnWC3 tetrahedra. In the second Mn site, Mn(2) is bonded in a distorted bent 150 degrees geometry to one W(1) and two equivalent C(1) atoms. C(1) is bonded in a 8-coordinate geometry to four equivalent Mn(1) and four equivalent Mn(2) atoms.
Mn20(WC2)3 crystallizes in the cubic Fm-3m space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a cuboctahedral geometry to twelve equivalent Mn(2) atoms. All W(1)-Mn(2) bond lengths are 2.54 Å. In the second W site, W(2) is bonded in a distorted tetrahedral geometry to four equivalent Mn(1) atoms. All W(2)-Mn(1) bond lengths are 2.45 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one W(2) and three equivalent C(1) atoms to form a mixture of distorted corner and edge-sharing MnWC3 tetrahedra. All Mn(1)-C(1) bond lengths are 2.08 Å. In the second Mn site, Mn(2) is bonded in a distorted bent 150 degrees geometry to one W(1) and two equivalent C(1) atoms. Both Mn(2)-C(1) bond lengths are 2.10 Å. C(1) is bonded in a 8-coordinate geometry to four equivalent Mn(1) and four equivalent Mn(2) atoms.