Mn2CoNiSb2 is half-Heusler-derived structured and crystallizes in the trigonal R3m space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent Co(1), three equivalent Ni(1), one Sb(2), and three equivalent Sb(1) atoms to form a mixture of distorted corner and face-sharing MnCo3Ni3Sb4 tetrahedra. In the second Mn site, Mn(2) is bonded to three equivalent Co(1), three equivalent Ni(1), one Sb(1), and three equivalent Sb(2) atoms to form a mixture of distorted corner and face-sharing MnCo3Ni3Sb4 tetrahedra. Co(1) is bonded in a 10-coordinate geometry to three equivalent Mn(1), three equivalent Mn(2), one Sb(1), and three equivalent Sb(2) atoms. Ni(1) is bonded in a 10-coordinate geometry to three equivalent Mn(1), three equivalent Mn(2), one Sb(2), and three equivalent Sb(1) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a body-centered cubic geometry to one Mn(2), three equivalent Mn(1), one Co(1), and three equivalent Ni(1) atoms. In the second Sb site, Sb(2) is bonded in a body-centered cubic geometry to one Mn(1), three equivalent Mn(2), three equivalent Co(1), and one Ni(1) atom.
Mn2CoNiSb2 is half-Heusler-derived structured and crystallizes in the trigonal R3m space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent Co(1), three equivalent Ni(1), one Sb(2), and three equivalent Sb(1) atoms to form a mixture of distorted corner and face-sharing MnCo3Ni3Sb4 tetrahedra. All Mn(1)-Co(1) bond lengths are 3.01 Å. All Mn(1)-Ni(1) bond lengths are 3.03 Å. The Mn(1)-Sb(2) bond length is 2.59 Å. All Mn(1)-Sb(1) bond lengths are 2.61 Å. In the second Mn site, Mn(2) is bonded to three equivalent Co(1), three equivalent Ni(1), one Sb(1), and three equivalent Sb(2) atoms to form a mixture of distorted corner and face-sharing MnCo3Ni3Sb4 tetrahedra. All Mn(2)-Co(1) bond lengths are 3.01 Å. All Mn(2)-Ni(1) bond lengths are 3.02 Å. The Mn(2)-Sb(1) bond length is 2.64 Å. All Mn(2)-Sb(2) bond lengths are 2.61 Å. Co(1) is bonded in a 10-coordinate geometry to three equivalent Mn(1), three equivalent Mn(2), one Sb(1), and three equivalent Sb(2) atoms. The Co(1)-Sb(1) bond length is 2.61 Å. All Co(1)-Sb(2) bond lengths are 2.61 Å. Ni(1) is bonded in a 10-coordinate geometry to three equivalent Mn(1), three equivalent Mn(2), one Sb(2), and three equivalent Sb(1) atoms. The Ni(1)-Sb(2) bond length is 2.63 Å. All Ni(1)-Sb(1) bond lengths are 2.62 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a body-centered cubic geometry to one Mn(2), three equivalent Mn(1), one Co(1), and three equivalent Ni(1) atoms. In the second Sb site, Sb(2) is bonded in a body-centered cubic geometry to one Mn(1), three equivalent Mn(2), three equivalent Co(1), and one Ni(1) atom.