FePt2Cu is Tetraauricupride-derived structured and crystallizes in the tetragonal P4/mmm space group. Fe(1) is bonded to eight equivalent Pt(1) and four equivalent Cu(1) atoms to form distorted FeCu4Pt8 cuboctahedra that share corners with twelve equivalent Fe(1)Cu4Pt8 cuboctahedra, edges with eight equivalent Cu(1)Fe4Pt8 cuboctahedra, faces with four equivalent Cu(1)Fe4Pt8 cuboctahedra, and faces with six equivalent Fe(1)Cu4Pt8 cuboctahedra. Pt(1) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Cu(1) atoms. Cu(1) is bonded to four equivalent Fe(1) and eight equivalent Pt(1) atoms to form CuFe4Pt8 cuboctahedra that share corners with twelve equivalent Cu(1)Fe4Pt8 cuboctahedra, edges with eight equivalent Fe(1)Cu4Pt8 cuboctahedra, faces with four equivalent Fe(1)Cu4Pt8 cuboctahedra, and faces with six equivalent Cu(1)Fe4Pt8 cuboctahedra.
FePt2Cu is Tetraauricupride-derived structured and crystallizes in the tetragonal P4/mmm space group. Fe(1) is bonded to eight equivalent Pt(1) and four equivalent Cu(1) atoms to form distorted FeCu4Pt8 cuboctahedra that share corners with twelve equivalent Fe(1)Cu4Pt8 cuboctahedra, edges with eight equivalent Cu(1)Fe4Pt8 cuboctahedra, faces with four equivalent Cu(1)Fe4Pt8 cuboctahedra, and faces with six equivalent Fe(1)Cu4Pt8 cuboctahedra. All Fe(1)-Pt(1) bond lengths are 2.65 Å. All Fe(1)-Cu(1) bond lengths are 2.79 Å. Pt(1) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Cu(1) atoms. All Pt(1)-Cu(1) bond lengths are 2.65 Å. Cu(1) is bonded to four equivalent Fe(1) and eight equivalent Pt(1) atoms to form CuFe4Pt8 cuboctahedra that share corners with twelve equivalent Cu(1)Fe4Pt8 cuboctahedra, edges with eight equivalent Fe(1)Cu4Pt8 cuboctahedra, faces with four equivalent Fe(1)Cu4Pt8 cuboctahedra, and faces with six equivalent Cu(1)Fe4Pt8 cuboctahedra.