MgLa2NiZnO6 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted MgO5 trigonal bipyramids that share corners with three equivalent Ni(1)O6 octahedra,  a cornercorner with one Zn(1)O4 trigonal pyramid,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 11-65°. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), and two equivalent O(2) atoms. In the second La site, La(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Ni(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form NiO6 octahedra that share corners with three equivalent Mg(1)O5 trigonal bipyramids, corners with two equivalent Zn(1)O4 trigonal pyramids,  an edgeedge with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Zn(1)O4 trigonal pyramid. Zn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted ZnO4 trigonal pyramids that share corners with two equivalent Ni(1)O6 octahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 30-65°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one La(1), one La(2), one Ni(1), and one Zn(1) atom to form distorted OLa2MgZnNi trigonal bipyramids that share  a cornercorner with one O(3)La2MgZnNi trigonal bipyramid,  a cornercorner with one O(4)La2MgZnNi trigonal bipyramid, corners with two equivalent O(5)La2MgNi trigonal pyramids, edges with two equivalent O(3)La2MgZnNi trigonal bipyramids, edges with two equivalent O(4)La2MgZnNi trigonal bipyramids, and  an edgeedge with one O(5)La2MgNi trigonal pyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to one La(2), two equivalent La(1), one Ni(1), and one Zn(1) atom. In the third O site, O(3) is bonded to one Mg(1), one La(1), one La(2), one Ni(1), and one Zn(1) atom to form distorted OLa2MgZnNi trigonal bipyramids that share  a cornercorner with one O(1)La2MgZnNi trigonal bipyramid, corners with three equivalent O(4)La2MgZnNi trigonal bipyramids, corners with two equivalent O(5)La2MgNi trigonal pyramids,  an edgeedge with one O(4)La2MgZnNi trigonal bipyramid, edges with two equivalent O(1)La2MgZnNi trigonal bipyramids, and  an edgeedge with one O(5)La2MgNi trigonal pyramid. In the fourth O site, O(4) is bonded to one Mg(1), one La(1), one La(2), one Ni(1), and one Zn(1) atom to form distorted OLa2MgZnNi trigonal bipyramids that share  a cornercorner with one O(1)La2MgZnNi trigonal bipyramid, corners with three equivalent O(3)La2MgZnNi trigonal bipyramids, corners with two equivalent O(5)La2MgNi trigonal pyramids,  an edgeedge with one O(3)La2MgZnNi trigonal bipyramid, edges with two equivalent O(1)La2MgZnNi trigonal bipyramids, and  an edgeedge with one O(5)La2MgNi trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one La(1), one La(2), and one Ni(1) atom to form a mixture of distorted corner and edge-sharing OLa2MgNi trigonal pyramids. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one La(1), one La(2), and one Ni(1) atom.
MgLa2NiZnO6 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one O(4), one O(5), and one O(6) atom to form distorted MgO5 trigonal bipyramids that share corners with three equivalent Ni(1)O6 octahedra,  a cornercorner with one Zn(1)O4 trigonal pyramid,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 11-65°. The Mg(1)-O(1) bond length is 2.03 Å. The Mg(1)-O(3) bond length is 2.44 Å. The Mg(1)-O(4) bond length is 2.14 Å. The Mg(1)-O(5) bond length is 1.98 Å. The Mg(1)-O(6) bond length is 2.00 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), and two equivalent O(2) atoms. The La(1)-O(1) bond length is 2.42 Å. The La(1)-O(3) bond length is 2.44 Å. The La(1)-O(4) bond length is 2.59 Å. The La(1)-O(5) bond length is 2.44 Å. The La(1)-O(6) bond length is 2.37 Å. There is one shorter (2.52 Å) and one longer (3.06 Å) La(1)-O(2) bond length. In the second La site, La(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The La(2)-O(1) bond length is 2.53 Å. The La(2)-O(2) bond length is 2.35 Å. The La(2)-O(3) bond length is 2.53 Å. The La(2)-O(4) bond length is 2.49 Å. The La(2)-O(5) bond length is 2.44 Å. The La(2)-O(6) bond length is 2.46 Å. Ni(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form NiO6 octahedra that share corners with three equivalent Mg(1)O5 trigonal bipyramids, corners with two equivalent Zn(1)O4 trigonal pyramids,  an edgeedge with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The Ni(1)-O(1) bond length is 2.43 Å. The Ni(1)-O(2) bond length is 2.16 Å. The Ni(1)-O(3) bond length is 2.08 Å. The Ni(1)-O(4) bond length is 2.28 Å. The Ni(1)-O(5) bond length is 2.02 Å. The Ni(1)-O(6) bond length is 2.15 Å. Zn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted ZnO4 trigonal pyramids that share corners with two equivalent Ni(1)O6 octahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 30-65°. The Zn(1)-O(1) bond length is 2.11 Å. The Zn(1)-O(2) bond length is 1.99 Å. The Zn(1)-O(3) bond length is 1.97 Å. The Zn(1)-O(4) bond length is 2.03 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one La(1), one La(2), one Ni(1), and one Zn(1) atom to form distorted OLa2MgZnNi trigonal bipyramids that share  a cornercorner with one O(3)La2MgZnNi trigonal bipyramid,  a cornercorner with one O(4)La2MgZnNi trigonal bipyramid, corners with two equivalent O(5)La2MgNi trigonal pyramids, edges with two equivalent O(3)La2MgZnNi trigonal bipyramids, edges with two equivalent O(4)La2MgZnNi trigonal bipyramids, and  an edgeedge with one O(5)La2MgNi trigonal pyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to one La(2), two equivalent La(1), one Ni(1), and one Zn(1) atom. In the third O site, O(3) is bonded to one Mg(1), one La(1), one La(2), one Ni(1), and one Zn(1) atom to form distorted OLa2MgZnNi trigonal bipyramids that share  a cornercorner with one O(1)La2MgZnNi trigonal bipyramid, corners with three equivalent O(4)La2MgZnNi trigonal bipyramids, corners with two equivalent O(5)La2MgNi trigonal pyramids,  an edgeedge with one O(4)La2MgZnNi trigonal bipyramid, edges with two equivalent O(1)La2MgZnNi trigonal bipyramids, and  an edgeedge with one O(5)La2MgNi trigonal pyramid. In the fourth O site, O(4) is bonded to one Mg(1), one La(1), one La(2), one Ni(1), and one Zn(1) atom to form distorted OLa2MgZnNi trigonal bipyramids that share  a cornercorner with one O(1)La2MgZnNi trigonal bipyramid, corners with three equivalent O(3)La2MgZnNi trigonal bipyramids, corners with two equivalent O(5)La2MgNi trigonal pyramids,  an edgeedge with one O(3)La2MgZnNi trigonal bipyramid, edges with two equivalent O(1)La2MgZnNi trigonal bipyramids, and  an edgeedge with one O(5)La2MgNi trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one La(1), one La(2), and one Ni(1) atom to form a mixture of distorted corner and edge-sharing OLa2MgNi trigonal pyramids. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one La(1), one La(2), and one Ni(1) atom.