La7Nb3W4O30 crystallizes in the triclinic P-1 space group. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(15), one O(3), one O(6), one O(7), one O(9), and two equivalent O(11) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(1), one O(11), one O(13), one O(2), one O(4), one O(7), one O(8), and two equivalent O(12) atoms. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(12), one O(14), one O(2), one O(3), one O(5), one O(8), one O(9), and two equivalent O(10) atoms. In the fourth La site, La(4) is bonded to two equivalent O(13), two equivalent O(14), two equivalent O(15), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form LaO12 cuboctahedra that share faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent W(1)O6 octahedra, and faces with two equivalent W(2)O6 octahedra. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(13), two equivalent O(14), and two equivalent O(15) atoms to form NbO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, and faces with two equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 35-36°. In the second Nb site, Nb(2) is bonded to one O(1), one O(10), one O(14), one O(4), one O(6), and one O(7) atom to form distorted NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra, and  a faceface with one La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 32-36°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(11), one O(15), one O(2), one O(4), one O(5), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one W(2)O6 octahedra, and  a faceface with one La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 29-35°. In the second W site, W(2) is bonded to one O(12), one O(13), one O(3), one O(5), one O(6), and one O(9) atom to form distorted WO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one W(1)O6 octahedra, and  a faceface with one La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 29-35°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one La(1), one La(2), and one Nb(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one La(2), one La(3), and one W(1) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one La(1), one La(3), and one W(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one La(2), one La(4), one Nb(2), and one W(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one La(3), one La(4), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(2), and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one La(1), one La(2), and one Nb(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one La(2), one La(3), and one W(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one La(1), one La(3), and one W(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one La(1), two equivalent La(3), and one Nb(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one La(2), two equivalent La(1), and one W(1) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one La(3), two equivalent La(2), and one W(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one La(2), one La(4), one Nb(1), and one W(2) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one La(3), one La(4), one Nb(1), and one Nb(2) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(1), and one W(1) atom.
La7Nb3W4O30 crystallizes in the triclinic P-1 space group. There are four inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(1), one O(10), one O(15), one O(3), one O(6), one O(7), one O(9), and two equivalent O(11) atoms. The La(1)-O(1) bond length is 2.41 Å. The La(1)-O(10) bond length is 2.75 Å. The La(1)-O(15) bond length is 2.64 Å. The La(1)-O(3) bond length is 2.53 Å. The La(1)-O(6) bond length is 2.70 Å. The La(1)-O(7) bond length is 2.53 Å. The La(1)-O(9) bond length is 2.55 Å. There is one shorter (2.55 Å) and one longer (2.95 Å) La(1)-O(11) bond length. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(1), one O(11), one O(13), one O(2), one O(4), one O(7), one O(8), and two equivalent O(12) atoms. The La(2)-O(1) bond length is 2.46 Å. The La(2)-O(11) bond length is 2.79 Å. The La(2)-O(13) bond length is 2.68 Å. The La(2)-O(2) bond length is 2.47 Å. The La(2)-O(4) bond length is 2.66 Å. The La(2)-O(7) bond length is 2.45 Å. The La(2)-O(8) bond length is 2.60 Å. There is one shorter (2.57 Å) and one longer (2.98 Å) La(2)-O(12) bond length. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(12), one O(14), one O(2), one O(3), one O(5), one O(8), one O(9), and two equivalent O(10) atoms. The La(3)-O(12) bond length is 2.84 Å. The La(3)-O(14) bond length is 2.60 Å. The La(3)-O(2) bond length is 2.56 Å. The La(3)-O(3) bond length is 2.42 Å. The La(3)-O(5) bond length is 2.69 Å. The La(3)-O(8) bond length is 2.54 Å. The La(3)-O(9) bond length is 2.57 Å. There is one shorter (2.48 Å) and one longer (2.91 Å) La(3)-O(10) bond length. In the fourth La site, La(4) is bonded to two equivalent O(13), two equivalent O(14), two equivalent O(15), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form LaO12 cuboctahedra that share faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent W(1)O6 octahedra, and faces with two equivalent W(2)O6 octahedra. Both La(4)-O(13) bond lengths are 2.73 Å. Both La(4)-O(14) bond lengths are 2.77 Å. Both La(4)-O(15) bond lengths are 2.77 Å. Both La(4)-O(4) bond lengths are 2.58 Å. Both La(4)-O(5) bond lengths are 2.61 Å. Both La(4)-O(6) bond lengths are 2.56 Å. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(13), two equivalent O(14), and two equivalent O(15) atoms to form NbO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, and faces with two equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 35-36°. Both Nb(1)-O(13) bond lengths are 2.05 Å. Both Nb(1)-O(14) bond lengths are 2.01 Å. Both Nb(1)-O(15) bond lengths are 2.05 Å. In the second Nb site, Nb(2) is bonded to one O(1), one O(10), one O(14), one O(4), one O(6), and one O(7) atom to form distorted NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra, and  a faceface with one La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 32-36°. The Nb(2)-O(1) bond length is 1.91 Å. The Nb(2)-O(10) bond length is 1.88 Å. The Nb(2)-O(14) bond length is 2.34 Å. The Nb(2)-O(4) bond length is 2.23 Å. The Nb(2)-O(6) bond length is 2.07 Å. The Nb(2)-O(7) bond length is 1.90 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(11), one O(15), one O(2), one O(4), one O(5), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one W(2)O6 octahedra, and  a faceface with one La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 29-35°. The W(1)-O(11) bond length is 1.85 Å. The W(1)-O(15) bond length is 2.18 Å. The W(1)-O(2) bond length is 1.87 Å. The W(1)-O(4) bond length is 1.96 Å. The W(1)-O(5) bond length is 2.13 Å. The W(1)-O(8) bond length is 1.86 Å. In the second W site, W(2) is bonded to one O(12), one O(13), one O(3), one O(5), one O(6), and one O(9) atom to form distorted WO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one W(1)O6 octahedra, and  a faceface with one La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 29-35°. The W(2)-O(12) bond length is 1.85 Å. The W(2)-O(13) bond length is 2.18 Å. The W(2)-O(3) bond length is 1.87 Å. The W(2)-O(5) bond length is 2.00 Å. The W(2)-O(6) bond length is 2.07 Å. The W(2)-O(9) bond length is 1.85 Å. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one La(1), one La(2), and one Nb(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one La(2), one La(3), and one W(1) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one La(1), one La(3), and one W(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one La(2), one La(4), one Nb(2), and one W(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one La(3), one La(4), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(2), and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one La(1), one La(2), and one Nb(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one La(2), one La(3), and one W(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one La(1), one La(3), and one W(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one La(1), two equivalent La(3), and one Nb(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one La(2), two equivalent La(1), and one W(1) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one La(3), two equivalent La(2), and one W(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one La(2), one La(4), one Nb(1), and one W(2) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one La(3), one La(4), one Nb(1), and one Nb(2) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Nb(1), and one W(1) atom.