Ni11Cu2O13 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. There are six inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms to form NiO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra, corners with two equivalent Ni(6)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra,  an edgeedge with one Ni(6)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with four equivalent Ni(2)O6 octahedra, and edges with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Ni site, Ni(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra,  an edgeedge with one Ni(3)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with four equivalent Ni(1)O6 octahedra, and edges with four equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Ni site, Ni(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth Ni site, Ni(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fifth Ni site, Ni(5) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedra are not tilted. In the sixth Ni site, Ni(6) is bonded to two equivalent O(6) and four equivalent O(7) atoms to form NiO6 octahedra that share corners with two equivalent Ni(6)O6 octahedra, corners with four equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(6)O6 octahedra, and edges with eight equivalent Cu(1)O6 octahedra. The corner-sharing octahedra are not tilted. Cu(1) is bonded to two equivalent O(4), two equivalent O(6), and two equivalent O(7) atoms to form CuO6 octahedra that share corners with two equivalent Ni(2)O6 octahedra, corners with four equivalent Cu(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with three equivalent Cu(1)O6 octahedra, edges with four equivalent Ni(1)O6 octahedra, and edges with four equivalent Ni(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are seven inequivalent O sites. In the first O site, O(6) is bonded to two equivalent Ni(6) and four equivalent Cu(1) atoms to form OCu4Ni2 octahedra that share corners with two equivalent O(6)Cu4Ni2 octahedra, corners with four equivalent O(4)Cu2Ni4 octahedra, edges with two equivalent O(4)Cu2Ni4 octahedra, edges with two equivalent O(6)Cu4Ni2 octahedra, and edges with eight equivalent O(7)Cu2Ni4 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(7) is bonded to two equivalent Ni(1), two equivalent Ni(6), and two equivalent Cu(1) atoms to form OCu2Ni4 octahedra that share corners with two equivalent O(3)Ni6 octahedra, corners with four equivalent O(7)Cu2Ni4 octahedra,  an edgeedge with one O(3)Ni6 octahedra, edges with three equivalent O(7)Cu2Ni4 octahedra, edges with four equivalent O(4)Cu2Ni4 octahedra, and edges with four equivalent O(6)Cu4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(1) is bonded to two equivalent Ni(3), two equivalent Ni(4), and two equivalent Ni(5) atoms to form a mixture of edge and corner-sharing ONi6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(2) is bonded to two equivalent Ni(3) and four equivalent Ni(5) atoms to form a mixture of edge and corner-sharing ONi6 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(3) is bonded to two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(4) atoms to form ONi6 octahedra that share corners with two equivalent O(7)Cu2Ni4 octahedra, corners with two equivalent O(1)Ni6 octahedra, corners with two equivalent O(3)Ni6 octahedra,  an edgeedge with one O(7)Cu2Ni4 octahedra,  an edgeedge with one O(1)Ni6 octahedra, edges with two equivalent O(3)Ni6 octahedra, edges with four equivalent O(4)Cu2Ni4 octahedra, and edges with four equivalent O(5)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the sixth O site, O(4) is bonded to two equivalent Ni(1), two equivalent Ni(2), and two equivalent Cu(1) atoms to form OCu2Ni4 octahedra that share corners with two equivalent O(4)Cu2Ni4 octahedra, corners with two equivalent O(6)Cu4Ni2 octahedra, corners with two equivalent O(5)Ni6 octahedra,  an edgeedge with one O(6)Cu4Ni2 octahedra,  an edgeedge with one O(5)Ni6 octahedra, edges with two equivalent O(4)Cu2Ni4 octahedra, edges with four equivalent O(7)Cu2Ni4 octahedra, and edges with four equivalent O(3)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the seventh O site, O(5) is bonded to two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms to form ONi6 octahedra that share corners with two equivalent O(4)Cu2Ni4 octahedra, corners with two equivalent O(2)Ni6 octahedra, corners with two equivalent O(5)Ni6 octahedra,  an edgeedge with one O(4)Cu2Ni4 octahedra,  an edgeedge with one O(2)Ni6 octahedra, edges with two equivalent O(5)Ni6 octahedra, edges with four equivalent O(1)Ni6 octahedra, and edges with four equivalent O(3)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°.
Ni11Cu2O13 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. There are six inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms to form NiO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra, corners with two equivalent Ni(6)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra,  an edgeedge with one Ni(6)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with four equivalent Ni(2)O6 octahedra, and edges with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. Both Ni(1)-O(3) bond lengths are 2.10 Å. Both Ni(1)-O(4) bond lengths are 2.10 Å. Both Ni(1)-O(7) bond lengths are 2.12 Å. In the second Ni site, Ni(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra,  an edgeedge with one Ni(3)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with four equivalent Ni(1)O6 octahedra, and edges with four equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. Both Ni(2)-O(3) bond lengths are 2.10 Å. Both Ni(2)-O(4) bond lengths are 2.08 Å. Both Ni(2)-O(5) bond lengths are 2.09 Å. In the third Ni site, Ni(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Both Ni(3)-O(1) bond lengths are 2.10 Å. Both Ni(3)-O(2) bond lengths are 2.10 Å. Both Ni(3)-O(5) bond lengths are 2.10 Å. In the fourth Ni site, Ni(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Both Ni(4)-O(1) bond lengths are 2.10 Å. Both Ni(4)-O(3) bond lengths are 2.10 Å. Both Ni(4)-O(5) bond lengths are 2.10 Å. In the fifth Ni site, Ni(5) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedra are not tilted. Both Ni(5)-O(1) bond lengths are 2.11 Å. All Ni(5)-O(2) bond lengths are 2.10 Å. In the sixth Ni site, Ni(6) is bonded to two equivalent O(6) and four equivalent O(7) atoms to form NiO6 octahedra that share corners with two equivalent Ni(6)O6 octahedra, corners with four equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(6)O6 octahedra, and edges with eight equivalent Cu(1)O6 octahedra. The corner-sharing octahedra are not tilted. Both Ni(6)-O(6) bond lengths are 2.10 Å. All Ni(6)-O(7) bond lengths are 2.11 Å. Cu(1) is bonded to two equivalent O(4), two equivalent O(6), and two equivalent O(7) atoms to form CuO6 octahedra that share corners with two equivalent Ni(2)O6 octahedra, corners with four equivalent Cu(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with three equivalent Cu(1)O6 octahedra, edges with four equivalent Ni(1)O6 octahedra, and edges with four equivalent Ni(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. Both Cu(1)-O(4) bond lengths are 2.14 Å. Both Cu(1)-O(6) bond lengths are 2.12 Å. Both Cu(1)-O(7) bond lengths are 2.10 Å. There are seven inequivalent O sites. In the first O site, O(6) is bonded to two equivalent Ni(6) and four equivalent Cu(1) atoms to form OCu4Ni2 octahedra that share corners with two equivalent O(6)Cu4Ni2 octahedra, corners with four equivalent O(4)Cu2Ni4 octahedra, edges with two equivalent O(4)Cu2Ni4 octahedra, edges with two equivalent O(6)Cu4Ni2 octahedra, and edges with eight equivalent O(7)Cu2Ni4 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(7) is bonded to two equivalent Ni(1), two equivalent Ni(6), and two equivalent Cu(1) atoms to form OCu2Ni4 octahedra that share corners with two equivalent O(3)Ni6 octahedra, corners with four equivalent O(7)Cu2Ni4 octahedra,  an edgeedge with one O(3)Ni6 octahedra, edges with three equivalent O(7)Cu2Ni4 octahedra, edges with four equivalent O(4)Cu2Ni4 octahedra, and edges with four equivalent O(6)Cu4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(1) is bonded to two equivalent Ni(3), two equivalent Ni(4), and two equivalent Ni(5) atoms to form a mixture of edge and corner-sharing ONi6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(2) is bonded to two equivalent Ni(3) and four equivalent Ni(5) atoms to form a mixture of edge and corner-sharing ONi6 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(3) is bonded to two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(4) atoms to form ONi6 octahedra that share corners with two equivalent O(7)Cu2Ni4 octahedra, corners with two equivalent O(1)Ni6 octahedra, corners with two equivalent O(3)Ni6 octahedra,  an edgeedge with one O(7)Cu2Ni4 octahedra,  an edgeedge with one O(1)Ni6 octahedra, edges with two equivalent O(3)Ni6 octahedra, edges with four equivalent O(4)Cu2Ni4 octahedra, and edges with four equivalent O(5)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the sixth O site, O(4) is bonded to two equivalent Ni(1), two equivalent Ni(2), and two equivalent Cu(1) atoms to form OCu2Ni4 octahedra that share corners with two equivalent O(4)Cu2Ni4 octahedra, corners with two equivalent O(6)Cu4Ni2 octahedra, corners with two equivalent O(5)Ni6 octahedra,  an edgeedge with one O(6)Cu4Ni2 octahedra,  an edgeedge with one O(5)Ni6 octahedra, edges with two equivalent O(4)Cu2Ni4 octahedra, edges with four equivalent O(7)Cu2Ni4 octahedra, and edges with four equivalent O(3)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the seventh O site, O(5) is bonded to two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms to form ONi6 octahedra that share corners with two equivalent O(4)Cu2Ni4 octahedra, corners with two equivalent O(2)Ni6 octahedra, corners with two equivalent O(5)Ni6 octahedra,  an edgeedge with one O(4)Cu2Ni4 octahedra,  an edgeedge with one O(2)Ni6 octahedra, edges with two equivalent O(5)Ni6 octahedra, edges with four equivalent O(1)Ni6 octahedra, and edges with four equivalent O(3)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°.