LiCu2PO4 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(14), one O(2), one O(3), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(11), one O(2), one O(5), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(4)O4 trigonal pyramids. In the third Li site, Li(3) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Cu(8)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(3)O4 trigonal pyramids. In the fourth Li site, Li(4) is bonded to one O(12), one O(3), one O(5), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid, and  a cornercorner with one Cu(4)O4 trigonal pyramid. There are eight inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(13), one O(4), and one O(8) atom to form distorted CuO4 trigonal pyramids that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(1), one O(10), one O(6), and one O(8) atom to form CuO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid,  a cornercorner with one Cu(4)O4 trigonal pyramid, and corners with two equivalent Cu(1)O4 trigonal pyramids. In the third Cu site, Cu(3) is bonded to one O(12), one O(16), one O(6), and one O(9) atom to form distorted CuO4 trigonal pyramids that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(8)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the fourth Cu site, Cu(4) is bonded to one O(10), one O(11), one O(15), and one O(5) atom to form distorted CuO4 trigonal pyramids that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the fifth Cu site, Cu(5) is bonded to one O(1), one O(10), one O(13), and one O(16) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid,  a cornercorner with one Cu(4)O4 trigonal pyramid, and corners with two equivalent Cu(1)O4 trigonal pyramids. In the sixth Cu site, Cu(6) is bonded in a 4-coordinate geometry to one O(12), one O(14), one O(15), and one O(3) atom. In the seventh Cu site, Cu(7) is bonded to one O(11), one O(13), one O(15), and one O(2) atom to form CuO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(4)O4 trigonal pyramids. In the eighth Cu site, Cu(8) is bonded to one O(14), one O(16), one O(4), and one O(9) atom to form distorted CuO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(3)O4 trigonal pyramids. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(16), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(8)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(3)O4 trigonal pyramids. In the second P site, P(2) is bonded to one O(1), one O(15), one O(2), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(4)O4 trigonal pyramids. In the third P site, P(3) is bonded to one O(11), one O(12), one O(14), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid, and  a cornercorner with one Cu(4)O4 trigonal pyramid. In the fourth P site, P(4) is bonded to one O(10), one O(13), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid,  a cornercorner with one Cu(4)O4 trigonal pyramid, and corners with two equivalent Cu(1)O4 trigonal pyramids. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one Cu(5), and one P(2) atom. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Cu(7), and one P(2) atom to form distorted OLi2CuP tetrahedra that share  a cornercorner with one O(3)Li2CuP tetrahedra,  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(14)LiCu2P tetrahedra,  a cornercorner with one O(8)LiCu2P tetrahedra, corners with two equivalent O(5)Li2CuP tetrahedra, and corners with two equivalent O(11)LiCu2P tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(4), one Cu(6), and one P(1) atom to form OLi2CuP tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(5)Li2CuP tetrahedra, corners with two equivalent O(7)Li3P tetrahedra, and corners with two equivalent O(14)LiCu2P tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(3), one Cu(1), one Cu(8), and one P(1) atom. In the fifth O site, O(5) is bonded to one Li(2), one Li(4), one Cu(4), and one P(2) atom to form distorted OLi2CuP tetrahedra that share  a cornercorner with one O(3)Li2CuP tetrahedra,  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(8)LiCu2P tetrahedra, corners with two equivalent O(2)Li2CuP tetrahedra, and corners with two equivalent O(11)LiCu2P tetrahedra. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Cu(2), one Cu(3), and one P(1) atom. In the seventh O site, O(7) is bonded to one Li(1), one Li(3), one Li(4), and one P(3) atom to form OLi3P tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(5)Li2CuP tetrahedra,  a cornercorner with one O(11)LiCu2P tetrahedra,  a cornercorner with one O(9)LiCu2P tetrahedra, corners with two equivalent O(3)Li2CuP tetrahedra, and corners with two equivalent O(14)LiCu2P tetrahedra. In the eighth O site, O(8) is bonded to one Li(2), one Cu(1), one Cu(2), and one P(4) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(5)Li2CuP tetrahedra,  a cornercorner with one O(11)LiCu2P tetrahedra, and  a cornercorner with one O(9)LiCu2P tetrahedra. In the ninth O site, O(9) is bonded to one Li(3), one Cu(3), one Cu(8), and one P(4) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(14)LiCu2P tetrahedra, and  a cornercorner with one O(8)LiCu2P tetrahedra. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Cu(2), one Cu(4), one Cu(5), and one P(4) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Cu(4), one Cu(7), and one P(3) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(14)LiCu2P tetrahedra,  a cornercorner with one O(8)LiCu2P tetrahedra, corners with two equivalent O(2)Li2CuP tetrahedra, and corners with two equivalent O(5)Li2CuP tetrahedra. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Cu(3), one Cu(6), and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(5), one Cu(7), and one P(4) atom. In the fourteenth O site, O(14) is bonded to one Li(1), one Cu(6), one Cu(8), and one P(3) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(11)LiCu2P tetrahedra,  a cornercorner with one O(9)LiCu2P tetrahedra, corners with two equivalent O(3)Li2CuP tetrahedra, and corners with two equivalent O(7)Li3P tetrahedra. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Cu(4), one Cu(6), one Cu(7), and one P(2) atom. In the sixteenth O site, O(16) is bonded in a distorted rectangular see-saw-like geometry to one Cu(3), one Cu(5), one Cu(8), and one P(1) atom.
LiCu2PO4 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(14), one O(2), one O(3), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Li(1)-O(14) bond length is 2.02 Å. The Li(1)-O(2) bond length is 2.00 Å. The Li(1)-O(3) bond length is 2.00 Å. The Li(1)-O(7) bond length is 2.13 Å. In the second Li site, Li(2) is bonded to one O(11), one O(2), one O(5), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(4)O4 trigonal pyramids. The Li(2)-O(11) bond length is 1.95 Å. The Li(2)-O(2) bond length is 2.03 Å. The Li(2)-O(5) bond length is 2.03 Å. The Li(2)-O(8) bond length is 2.02 Å. In the third Li site, Li(3) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Cu(8)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(3)O4 trigonal pyramids. The Li(3)-O(4) bond length is 1.97 Å. The Li(3)-O(6) bond length is 2.03 Å. The Li(3)-O(7) bond length is 2.01 Å. The Li(3)-O(9) bond length is 1.98 Å. In the fourth Li site, Li(4) is bonded to one O(12), one O(3), one O(5), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid, and  a cornercorner with one Cu(4)O4 trigonal pyramid. The Li(4)-O(12) bond length is 2.02 Å. The Li(4)-O(3) bond length is 1.98 Å. The Li(4)-O(5) bond length is 2.03 Å. The Li(4)-O(7) bond length is 2.00 Å. There are eight inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(13), one O(4), and one O(8) atom to form distorted CuO4 trigonal pyramids that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Cu(1)-O(1) bond length is 2.40 Å. The Cu(1)-O(13) bond length is 2.00 Å. The Cu(1)-O(4) bond length is 2.28 Å. The Cu(1)-O(8) bond length is 2.02 Å. In the second Cu site, Cu(2) is bonded to one O(1), one O(10), one O(6), and one O(8) atom to form CuO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid,  a cornercorner with one Cu(4)O4 trigonal pyramid, and corners with two equivalent Cu(1)O4 trigonal pyramids. The Cu(2)-O(1) bond length is 2.07 Å. The Cu(2)-O(10) bond length is 2.31 Å. The Cu(2)-O(6) bond length is 2.09 Å. The Cu(2)-O(8) bond length is 2.09 Å. In the third Cu site, Cu(3) is bonded to one O(12), one O(16), one O(6), and one O(9) atom to form distorted CuO4 trigonal pyramids that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(8)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Cu(3)-O(12) bond length is 2.36 Å. The Cu(3)-O(16) bond length is 1.95 Å. The Cu(3)-O(6) bond length is 1.96 Å. The Cu(3)-O(9) bond length is 2.43 Å. In the fourth Cu site, Cu(4) is bonded to one O(10), one O(11), one O(15), and one O(5) atom to form distorted CuO4 trigonal pyramids that share  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Cu(4)-O(10) bond length is 2.29 Å. The Cu(4)-O(11) bond length is 2.46 Å. The Cu(4)-O(15) bond length is 1.99 Å. The Cu(4)-O(5) bond length is 1.99 Å. In the fifth Cu site, Cu(5) is bonded to one O(1), one O(10), one O(13), and one O(16) atom to form CuO4 tetrahedra that share  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid,  a cornercorner with one Cu(4)O4 trigonal pyramid, and corners with two equivalent Cu(1)O4 trigonal pyramids. The Cu(5)-O(1) bond length is 2.15 Å. The Cu(5)-O(10) bond length is 2.19 Å. The Cu(5)-O(13) bond length is 2.08 Å. The Cu(5)-O(16) bond length is 2.14 Å. In the sixth Cu site, Cu(6) is bonded in a 4-coordinate geometry to one O(12), one O(14), one O(15), and one O(3) atom. The Cu(6)-O(12) bond length is 1.99 Å. The Cu(6)-O(14) bond length is 1.99 Å. The Cu(6)-O(15) bond length is 2.31 Å. The Cu(6)-O(3) bond length is 2.26 Å. In the seventh Cu site, Cu(7) is bonded to one O(11), one O(13), one O(15), and one O(2) atom to form CuO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(4)O4 trigonal pyramids. The Cu(7)-O(11) bond length is 2.09 Å. The Cu(7)-O(13) bond length is 2.11 Å. The Cu(7)-O(15) bond length is 2.10 Å. The Cu(7)-O(2) bond length is 2.19 Å. In the eighth Cu site, Cu(8) is bonded to one O(14), one O(16), one O(4), and one O(9) atom to form distorted CuO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(3)O4 trigonal pyramids. The Cu(8)-O(14) bond length is 2.16 Å. The Cu(8)-O(16) bond length is 2.15 Å. The Cu(8)-O(4) bond length is 2.25 Å. The Cu(8)-O(9) bond length is 2.05 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(16), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(8)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(3)O4 trigonal pyramids. The P(1)-O(16) bond length is 1.57 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(4) bond length is 1.55 Å. The P(1)-O(6) bond length is 1.58 Å. In the second P site, P(2) is bonded to one O(1), one O(15), one O(2), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra,  a cornercorner with one Cu(2)O4 tetrahedra,  a cornercorner with one Cu(5)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Cu(7)O4 tetrahedra,  a cornercorner with one Cu(1)O4 trigonal pyramid, and corners with two equivalent Cu(4)O4 trigonal pyramids. The P(2)-O(1) bond length is 1.56 Å. The P(2)-O(15) bond length is 1.57 Å. The P(2)-O(2) bond length is 1.56 Å. The P(2)-O(5) bond length is 1.57 Å. In the third P site, P(3) is bonded to one O(11), one O(12), one O(14), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid, and  a cornercorner with one Cu(4)O4 trigonal pyramid. The P(3)-O(11) bond length is 1.55 Å. The P(3)-O(12) bond length is 1.56 Å. The P(3)-O(14) bond length is 1.59 Å. The P(3)-O(7) bond length is 1.56 Å. In the fourth P site, P(4) is bonded to one O(10), one O(13), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O4 tetrahedra,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Cu(7)O4 tetrahedra,  a cornercorner with one Cu(8)O4 tetrahedra, corners with two equivalent Cu(2)O4 tetrahedra, corners with two equivalent Cu(5)O4 tetrahedra,  a cornercorner with one Cu(3)O4 trigonal pyramid,  a cornercorner with one Cu(4)O4 trigonal pyramid, and corners with two equivalent Cu(1)O4 trigonal pyramids. The P(4)-O(10) bond length is 1.55 Å. The P(4)-O(13) bond length is 1.57 Å. The P(4)-O(8) bond length is 1.57 Å. The P(4)-O(9) bond length is 1.56 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one Cu(5), and one P(2) atom. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Cu(7), and one P(2) atom to form distorted OLi2CuP tetrahedra that share  a cornercorner with one O(3)Li2CuP tetrahedra,  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(14)LiCu2P tetrahedra,  a cornercorner with one O(8)LiCu2P tetrahedra, corners with two equivalent O(5)Li2CuP tetrahedra, and corners with two equivalent O(11)LiCu2P tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(4), one Cu(6), and one P(1) atom to form OLi2CuP tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(5)Li2CuP tetrahedra, corners with two equivalent O(7)Li3P tetrahedra, and corners with two equivalent O(14)LiCu2P tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(3), one Cu(1), one Cu(8), and one P(1) atom. In the fifth O site, O(5) is bonded to one Li(2), one Li(4), one Cu(4), and one P(2) atom to form distorted OLi2CuP tetrahedra that share  a cornercorner with one O(3)Li2CuP tetrahedra,  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(8)LiCu2P tetrahedra, corners with two equivalent O(2)Li2CuP tetrahedra, and corners with two equivalent O(11)LiCu2P tetrahedra. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Cu(2), one Cu(3), and one P(1) atom. In the seventh O site, O(7) is bonded to one Li(1), one Li(3), one Li(4), and one P(3) atom to form OLi3P tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(5)Li2CuP tetrahedra,  a cornercorner with one O(11)LiCu2P tetrahedra,  a cornercorner with one O(9)LiCu2P tetrahedra, corners with two equivalent O(3)Li2CuP tetrahedra, and corners with two equivalent O(14)LiCu2P tetrahedra. In the eighth O site, O(8) is bonded to one Li(2), one Cu(1), one Cu(2), and one P(4) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(5)Li2CuP tetrahedra,  a cornercorner with one O(11)LiCu2P tetrahedra, and  a cornercorner with one O(9)LiCu2P tetrahedra. In the ninth O site, O(9) is bonded to one Li(3), one Cu(3), one Cu(8), and one P(4) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(14)LiCu2P tetrahedra, and  a cornercorner with one O(8)LiCu2P tetrahedra. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Cu(2), one Cu(4), one Cu(5), and one P(4) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Cu(4), one Cu(7), and one P(3) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(7)Li3P tetrahedra,  a cornercorner with one O(14)LiCu2P tetrahedra,  a cornercorner with one O(8)LiCu2P tetrahedra, corners with two equivalent O(2)Li2CuP tetrahedra, and corners with two equivalent O(5)Li2CuP tetrahedra. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Cu(3), one Cu(6), and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(5), one Cu(7), and one P(4) atom. In the fourteenth O site, O(14) is bonded to one Li(1), one Cu(6), one Cu(8), and one P(3) atom to form distorted OLiCu2P tetrahedra that share  a cornercorner with one O(2)Li2CuP tetrahedra,  a cornercorner with one O(11)LiCu2P tetrahedra,  a cornercorner with one O(9)LiCu2P tetrahedra, corners with two equivalent O(3)Li2CuP tetrahedra, and corners with two equivalent O(7)Li3P tetrahedra. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Cu(4), one Cu(6), one Cu(7), and one P(2) atom. In the sixteenth O site, O(16) is bonded in a distorted rectangular see-saw-like geometry to one Cu(3), one Cu(5), one Cu(8), and one P(1) atom.