Mn2CoAl crystallizes in the cubic F-43m space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to four equivalent Mn(2) and four equivalent Co(1) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to four equivalent Mn(1), six equivalent Co(1), and four equivalent Al(1) atoms. Co(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(1), six equivalent Mn(2), and four equivalent Al(1) atoms. Al(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(2) and four equivalent Co(1) atoms.
Mn2CoAl crystallizes in the cubic F-43m space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to four equivalent Mn(2) and four equivalent Co(1) atoms. All Mn(1)-Mn(2) bond lengths are 2.49 Å. All Mn(1)-Co(1) bond lengths are 2.49 Å. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to four equivalent Mn(1), six equivalent Co(1), and four equivalent Al(1) atoms. All Mn(2)-Co(1) bond lengths are 2.87 Å. All Mn(2)-Al(1) bond lengths are 2.49 Å. Co(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(1), six equivalent Mn(2), and four equivalent Al(1) atoms. All Co(1)-Al(1) bond lengths are 2.49 Å. Al(1) is bonded in a distorted body-centered cubic geometry to four equivalent Mn(2) and four equivalent Co(1) atoms.