Mn2PtNiSb2 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 in a 10-coordinate geometry to three equivalent Pt(1), three equivalent Ni(1), one Sb(1), and three equivalent Sb(2) atoms. In the second Mn site, Mn(2) is bonded in a 10-coordinate geometry to three equivalent Pt(1), three equivalent Ni(1), one Sb(2), and three equivalent Sb(1) atoms. Pt(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(1), three equivalent Mn(2), one Pt(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(2), three equivalent Mn(1), three equivalent Pt(1), and one Ni(1) atom.
Mn2PtNiSb2 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 in a 10-coordinate geometry to three equivalent Pt(1), three equivalent Ni(1), one Sb(1), and three equivalent Sb(2) atoms. All Mn(1)-Pt(1) bond lengths are 3.06 Å. All Mn(1)-Ni(1) bond lengths are 3.08 Å. The Mn(1)-Sb(1) bond length is 2.60 Å. All Mn(1)-Sb(2) bond lengths are 2.62 Å. In the second Mn site, Mn(2) is bonded in a 10-coordinate geometry to three equivalent Pt(1), three equivalent Ni(1), one Sb(2), and three equivalent Sb(1) atoms. All Mn(2)-Pt(1) bond lengths are 3.05 Å. All Mn(2)-Ni(1) bond lengths are 3.07 Å. The Mn(2)-Sb(2) bond length is 2.72 Å. All Mn(2)-Sb(1) bond lengths are 2.69 Å. Pt(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 Pt(1)-Sb(1) bond length is 2.71 Å. All Pt(1)-Sb(2) bond lengths are 2.69 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 2.57 Å. All Ni(1)-Sb(1) bond lengths are 2.63 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(1), three equivalent Mn(2), one Pt(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(2), three equivalent Mn(1), three equivalent Pt(1), and one Ni(1) atom.