Fe3Pt2Ni3 is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Fe(2), four equivalent Pt(1), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form FeFe2Ni6Pt4 cuboctahedra that share corners with twelve equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(2)Fe8Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with two equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, and faces with six equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra. In the second Fe site, Fe(2) is bonded to four equivalent Fe(1), four equivalent Pt(1), and four equivalent Ni(2) atoms to form FeFe4Ni4Pt4 cuboctahedra that share corners with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, corners with eight equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with eight equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, and faces with four equivalent Ni(2)Fe8Pt4 cuboctahedra. Pt(1) is bonded to two equivalent Fe(2), four equivalent Fe(1), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form PtFe6Ni6 cuboctahedra that share corners with twelve equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(2)Fe8Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with two equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, and faces with six equivalent Pt(1)Fe6Ni6 cuboctahedra. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to four equivalent Fe(1), four equivalent Pt(1), and four equivalent Ni(3) atoms to form distorted NiFe4Ni4Pt4 cuboctahedra that share corners with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, corners with eight equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with eight equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with two equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, and faces with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra. In the second Ni site, Ni(2) is bonded to four equivalent Fe(1), four equivalent Fe(2), and four equivalent Pt(1) atoms to form NiFe8Pt4 cuboctahedra that share corners with four equivalent Ni(2)Fe8Pt4 cuboctahedra, corners with eight equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with eight equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, and faces with four equivalent Ni(2)Fe8Pt4 cuboctahedra. In the third Ni site, Ni(3) is bonded to four equivalent Fe(1), four equivalent Pt(1), and four equivalent Ni(1) atoms to form distorted NiFe4Ni4Pt4 cuboctahedra that share corners with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, corners with eight equivalent Ni(2)Fe8Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with two equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, and faces with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra.
Fe3Pt2Ni3 is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Fe(2), four equivalent Pt(1), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form FeFe2Ni6Pt4 cuboctahedra that share corners with twelve equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(2)Fe8Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with two equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, and faces with six equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra. Both Fe(1)-Fe(2) bond lengths are 2.55 Å. All Fe(1)-Pt(1) bond lengths are 2.59 Å. Both Fe(1)-Ni(1) bond lengths are 2.59 Å. Both Fe(1)-Ni(2) bond lengths are 2.56 Å. Both Fe(1)-Ni(3) bond lengths are 2.60 Å. In the second Fe site, Fe(2) is bonded to four equivalent Fe(1), four equivalent Pt(1), and four equivalent Ni(2) atoms to form FeFe4Ni4Pt4 cuboctahedra that share corners with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, corners with eight equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with eight equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, and faces with four equivalent Ni(2)Fe8Pt4 cuboctahedra. All Fe(2)-Pt(1) bond lengths are 2.58 Å. All Fe(2)-Ni(2) bond lengths are 2.59 Å. Pt(1) is bonded to two equivalent Fe(2), four equivalent Fe(1), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form PtFe6Ni6 cuboctahedra that share corners with twelve equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, edges with four equivalent Ni(2)Fe8Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with two equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, and faces with six equivalent Pt(1)Fe6Ni6 cuboctahedra. Both Pt(1)-Ni(1) bond lengths are 2.58 Å. Both Pt(1)-Ni(2) bond lengths are 2.57 Å. Both Pt(1)-Ni(3) bond lengths are 2.57 Å. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to four equivalent Fe(1), four equivalent Pt(1), and four equivalent Ni(3) atoms to form distorted NiFe4Ni4Pt4 cuboctahedra that share corners with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, corners with eight equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with eight equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with two equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, and faces with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra. All Ni(1)-Ni(3) bond lengths are 2.59 Å. In the second Ni site, Ni(2) is bonded to four equivalent Fe(1), four equivalent Fe(2), and four equivalent Pt(1) atoms to form NiFe8Pt4 cuboctahedra that share corners with four equivalent Ni(2)Fe8Pt4 cuboctahedra, corners with eight equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, edges with eight equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, faces with two equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, and faces with four equivalent Ni(2)Fe8Pt4 cuboctahedra. In the third Ni site, Ni(3) is bonded to four equivalent Fe(1), four equivalent Pt(1), and four equivalent Ni(1) atoms to form distorted NiFe4Ni4Pt4 cuboctahedra that share corners with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra, corners with eight equivalent Ni(2)Fe8Pt4 cuboctahedra, edges with eight equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, edges with eight equivalent Fe(2)Fe4Ni4Pt4 cuboctahedra, edges with eight equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with two equivalent Ni(2)Fe8Pt4 cuboctahedra, faces with four equivalent Fe(1)Fe2Ni6Pt4 cuboctahedra, faces with four equivalent Pt(1)Fe6Ni6 cuboctahedra, faces with four equivalent Ni(1)Fe4Ni4Pt4 cuboctahedra, and faces with four equivalent Ni(3)Fe4Ni4Pt4 cuboctahedra.