Ni9CuO10 is Caswellsilverite-like structured and crystallizes in the triclinic P-1 space group. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form NiO6 octahedra that share  a cornercorner with one Ni(4)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with three equivalent Ni(5)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(5)O6 octahedra, edges with three equivalent Ni(2)O6 octahedra, and edges with three equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the second Ni site, Ni(2) is bonded to one O(1), one O(5), two equivalent O(2), and two equivalent O(3) atoms to form NiO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, corners with three equivalent Ni(3)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, edges with three equivalent Ni(1)O6 octahedra, and edges with three equivalent Ni(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Ni site, Ni(3) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share  a cornercorner with one Ni(5)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra, corners with three equivalent Ni(2)O6 octahedra,  an edgeedge with one Ni(3)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, edges with three equivalent Ni(1)O6 octahedra, and edges with three equivalent Ni(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth Ni site, Ni(4) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with four equivalent Ni(3)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with four equivalent Ni(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the fifth Ni site, Ni(5) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form NiO6 octahedra that share  a cornercorner with one Ni(3)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra, corners with three equivalent Ni(1)O6 octahedra,  an edgeedge with one Ni(5)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(4)O6 octahedra, edges with three equivalent Ni(2)O6 octahedra, and edges with three equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. Cu(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form CuO6 octahedra that share corners with two equivalent Ni(2)O6 octahedra, corners with four equivalent Ni(5)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(4)O6 octahedra, edges with two equivalent Ni(5)O6 octahedra, and edges with four equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Ni(2), one Ni(3), one Ni(4), one Ni(5), and two equivalent Ni(1) atoms to form ONi6 octahedra that share  a cornercorner with one O(4)CuNi5 octahedra,  a cornercorner with one O(1)Ni6 octahedra, corners with two equivalent O(5)CuNi5 octahedra, corners with two equivalent O(2)Ni6 octahedra,  an edgeedge with one O(1)Ni6 octahedra, edges with two equivalent O(5)CuNi5 octahedra, edges with three equivalent O(3)CuNi5 octahedra, edges with three equivalent O(4)CuNi5 octahedra, and edges with three equivalent O(2)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second O site, O(2) is bonded to one Ni(3), one Ni(5), two equivalent Ni(1), and two equivalent Ni(2) atoms to form ONi6 octahedra that share  a cornercorner with one O(4)CuNi5 octahedra,  a cornercorner with one O(5)CuNi5 octahedra, corners with two equivalent O(3)CuNi5 octahedra, corners with two equivalent O(1)Ni6 octahedra, edges with two equivalent O(4)CuNi5 octahedra, edges with two equivalent O(5)CuNi5 octahedra, edges with two equivalent O(2)Ni6 octahedra, edges with three equivalent O(3)CuNi5 octahedra, and edges with three equivalent O(1)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the third O site, O(3) is bonded to one Ni(1), one Ni(3), one Ni(5), two equivalent Ni(2), and one Cu(1) atom to form OCuNi5 octahedra that share  a cornercorner with one O(3)CuNi5 octahedra,  a cornercorner with one O(5)CuNi5 octahedra, corners with two equivalent O(4)CuNi5 octahedra, corners with two equivalent O(2)Ni6 octahedra,  an edgeedge with one O(3)CuNi5 octahedra, edges with two equivalent O(4)CuNi5 octahedra, edges with three equivalent O(5)CuNi5 octahedra, edges with three equivalent O(1)Ni6 octahedra, and edges with three equivalent O(2)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the fourth O site, O(4) is bonded to one Ni(1), one Ni(3), one Ni(4), two equivalent Ni(5), and one Cu(1) atom to form OCuNi5 octahedra that share  a cornercorner with one O(1)Ni6 octahedra,  a cornercorner with one O(2)Ni6 octahedra, corners with two equivalent O(3)CuNi5 octahedra, corners with two equivalent O(4)CuNi5 octahedra,  an edgeedge with one O(4)CuNi5 octahedra, edges with two equivalent O(3)CuNi5 octahedra, edges with two equivalent O(2)Ni6 octahedra, edges with three equivalent O(1)Ni6 octahedra, and edges with four equivalent O(5)CuNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the fifth O site, O(5) is bonded to one Ni(2), one Ni(4), one Ni(5), two equivalent Ni(3), and one Cu(1) atom to form OCuNi5 octahedra that share  a cornercorner with one O(3)CuNi5 octahedra,  a cornercorner with one O(2)Ni6 octahedra, corners with two equivalent O(5)CuNi5 octahedra, corners with two equivalent O(1)Ni6 octahedra,  an edgeedge with one O(5)CuNi5 octahedra, edges with two equivalent O(1)Ni6 octahedra, edges with two equivalent O(2)Ni6 octahedra, edges with three equivalent O(3)CuNi5 octahedra, and edges with four equivalent O(4)CuNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-2°.
Ni9CuO10 is Caswellsilverite-like structured and crystallizes in the triclinic P-1 space group. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form NiO6 octahedra that share  a cornercorner with one Ni(4)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with three equivalent Ni(5)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(5)O6 octahedra, edges with three equivalent Ni(2)O6 octahedra, and edges with three equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. The Ni(1)-O(3) bond length is 2.14 Å. The Ni(1)-O(4) bond length is 2.09 Å. There is one shorter (2.09 Å) and one longer (2.11 Å) Ni(1)-O(1) bond length. There is one shorter (2.09 Å) and one longer (2.13 Å) Ni(1)-O(2) bond length. In the second Ni site, Ni(2) is bonded to one O(1), one O(5), two equivalent O(2), and two equivalent O(3) atoms to form NiO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, corners with three equivalent Ni(3)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, edges with three equivalent Ni(1)O6 octahedra, and edges with three equivalent Ni(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. The Ni(2)-O(1) bond length is 2.12 Å. The Ni(2)-O(5) bond length is 2.10 Å. There is one shorter (2.09 Å) and one longer (2.12 Å) Ni(2)-O(2) bond length. There is one shorter (2.09 Å) and one longer (2.10 Å) Ni(2)-O(3) bond length. In the third Ni site, Ni(3) is bonded to one O(1), one O(2), one O(3), one O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share  a cornercorner with one Ni(5)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra, corners with three equivalent Ni(2)O6 octahedra,  an edgeedge with one Ni(3)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, edges with three equivalent Ni(1)O6 octahedra, and edges with three equivalent Ni(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. The Ni(3)-O(1) bond length is 2.12 Å. The Ni(3)-O(2) bond length is 2.09 Å. The Ni(3)-O(3) bond length is 2.10 Å. The Ni(3)-O(4) bond length is 2.09 Å. There is one shorter (2.11 Å) and one longer (2.13 Å) Ni(3)-O(5) bond length. In the fourth Ni site, Ni(4) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Ni(1)O6 octahedra, corners with four equivalent Ni(3)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with four equivalent Ni(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-5°. Both Ni(4)-O(1) bond lengths are 2.10 Å. Both Ni(4)-O(4) bond lengths are 2.09 Å. Both Ni(4)-O(5) bond lengths are 2.13 Å. In the fifth Ni site, Ni(5) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form NiO6 octahedra that share  a cornercorner with one Ni(3)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra, corners with three equivalent Ni(1)O6 octahedra,  an edgeedge with one Ni(5)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(4)O6 octahedra, edges with three equivalent Ni(2)O6 octahedra, and edges with three equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. The Ni(5)-O(1) bond length is 2.10 Å. The Ni(5)-O(2) bond length is 2.12 Å. The Ni(5)-O(3) bond length is 2.10 Å. The Ni(5)-O(5) bond length is 2.13 Å. There is one shorter (2.04 Å) and one longer (2.11 Å) Ni(5)-O(4) bond length. Cu(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form CuO6 octahedra that share corners with two equivalent Ni(2)O6 octahedra, corners with four equivalent Ni(5)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(4)O6 octahedra, edges with two equivalent Ni(5)O6 octahedra, and edges with four equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Both Cu(1)-O(3) bond lengths are 2.12 Å. Both Cu(1)-O(4) bond lengths are 2.23 Å. Both Cu(1)-O(5) bond lengths are 2.06 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Ni(2), one Ni(3), one Ni(4), one Ni(5), and two equivalent Ni(1) atoms to form ONi6 octahedra that share  a cornercorner with one O(4)CuNi5 octahedra,  a cornercorner with one O(1)Ni6 octahedra, corners with two equivalent O(5)CuNi5 octahedra, corners with two equivalent O(2)Ni6 octahedra,  an edgeedge with one O(1)Ni6 octahedra, edges with two equivalent O(5)CuNi5 octahedra, edges with three equivalent O(3)CuNi5 octahedra, edges with three equivalent O(4)CuNi5 octahedra, and edges with three equivalent O(2)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second O site, O(2) is bonded to one Ni(3), one Ni(5), two equivalent Ni(1), and two equivalent Ni(2) atoms to form ONi6 octahedra that share  a cornercorner with one O(4)CuNi5 octahedra,  a cornercorner with one O(5)CuNi5 octahedra, corners with two equivalent O(3)CuNi5 octahedra, corners with two equivalent O(1)Ni6 octahedra, edges with two equivalent O(4)CuNi5 octahedra, edges with two equivalent O(5)CuNi5 octahedra, edges with two equivalent O(2)Ni6 octahedra, edges with three equivalent O(3)CuNi5 octahedra, and edges with three equivalent O(1)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the third O site, O(3) is bonded to one Ni(1), one Ni(3), one Ni(5), two equivalent Ni(2), and one Cu(1) atom to form OCuNi5 octahedra that share  a cornercorner with one O(3)CuNi5 octahedra,  a cornercorner with one O(5)CuNi5 octahedra, corners with two equivalent O(4)CuNi5 octahedra, corners with two equivalent O(2)Ni6 octahedra,  an edgeedge with one O(3)CuNi5 octahedra, edges with two equivalent O(4)CuNi5 octahedra, edges with three equivalent O(5)CuNi5 octahedra, edges with three equivalent O(1)Ni6 octahedra, and edges with three equivalent O(2)Ni6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the fourth O site, O(4) is bonded to one Ni(1), one Ni(3), one Ni(4), two equivalent Ni(5), and one Cu(1) atom to form OCuNi5 octahedra that share  a cornercorner with one O(1)Ni6 octahedra,  a cornercorner with one O(2)Ni6 octahedra, corners with two equivalent O(3)CuNi5 octahedra, corners with two equivalent O(4)CuNi5 octahedra,  an edgeedge with one O(4)CuNi5 octahedra, edges with two equivalent O(3)CuNi5 octahedra, edges with two equivalent O(2)Ni6 octahedra, edges with three equivalent O(1)Ni6 octahedra, and edges with four equivalent O(5)CuNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the fifth O site, O(5) is bonded to one Ni(2), one Ni(4), one Ni(5), two equivalent Ni(3), and one Cu(1) atom to form OCuNi5 octahedra that share  a cornercorner with one O(3)CuNi5 octahedra,  a cornercorner with one O(2)Ni6 octahedra, corners with two equivalent O(5)CuNi5 octahedra, corners with two equivalent O(1)Ni6 octahedra,  an edgeedge with one O(5)CuNi5 octahedra, edges with two equivalent O(1)Ni6 octahedra, edges with two equivalent O(2)Ni6 octahedra, edges with three equivalent O(3)CuNi5 octahedra, and edges with four equivalent O(4)CuNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-2°.