Li2Pb2CuB4O10 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a distorted trigonal pyramidal geometry to one O(1), one O(2), one O(3), and one O(5) atom. Cu(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(4) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. Pb(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one B(1), and one Pb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Cu(1), and one B(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Cu(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one B(1) and one B(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Li(1), one B(2), and two equivalent Pb(1) atoms.
Li2Pb2CuB4O10 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a distorted trigonal pyramidal geometry to one O(1), one O(2), one O(3), and one O(5) atom. The Li(1)-O(1) bond length is 1.88 Å. The Li(1)-O(2) bond length is 1.90 Å. The Li(1)-O(3) bond length is 1.87 Å. The Li(1)-O(5) bond length is 2.10 Å. Cu(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Cu(1)-O(2) bond lengths are 1.93 Å. Both Cu(1)-O(3) bond lengths are 1.95 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(4) atom. The B(1)-O(1) bond length is 1.36 Å. The B(1)-O(2) bond length is 1.36 Å. The B(1)-O(4) bond length is 1.41 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. The B(2)-O(3) bond length is 1.34 Å. The B(2)-O(4) bond length is 1.41 Å. The B(2)-O(5) bond length is 1.38 Å. Pb(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(5) atoms. The Pb(1)-O(1) bond length is 2.23 Å. There is one shorter (2.31 Å) and one longer (2.40 Å) Pb(1)-O(5) bond length. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one B(1), and one Pb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Cu(1), and one B(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Cu(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one B(1) and one B(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Li(1), one B(2), and two equivalent Pb(1) atoms.