NiCu3 crystallizes in the orthorhombic Cmmm space group. Ni(1) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Cu(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent Cu(2), and four equivalent Cu(1) atoms. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to four equivalent Cu(1) and six equivalent Cu(2) atoms.
NiCu3 crystallizes in the orthorhombic Cmmm space group. Ni(1) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Cu(1) atoms. All Ni(1)-Ni(1) bond lengths are 2.44 Å. All Ni(1)-Cu(1) bond lengths are 2.42 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent Cu(2), and four equivalent Cu(1) atoms. Both Cu(1)-Cu(2) bond lengths are 2.47 Å. All Cu(1)-Cu(1) bond lengths are 2.44 Å. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to four equivalent Cu(1) and six equivalent Cu(2) atoms. There are four shorter (2.44 Å) and two longer (2.63 Å) Cu(2)-Cu(2) bond lengths.