Pb7O16 crystallizes in the monoclinic C2 space group. There are five inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the second Pb site, Pb(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. In the third Pb site, Pb(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 52-56°. In the fourth Pb site, Pb(4) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. In the fifth Pb site, Pb(5) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(3) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Pb(1), one Pb(4), and one Pb(5) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Pb(3) and one Pb(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Pb(2), one Pb(3), and one Pb(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Pb(2) and one Pb(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Pb(2), one Pb(4), and one Pb(5) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Pb(2) and one Pb(4) atom.
Pb7O16 crystallizes in the monoclinic C2 space group. There are five inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. Both Pb(1)-O(1) bond lengths are 2.18 Å. Both Pb(1)-O(2) bond lengths are 2.21 Å. Both Pb(1)-O(6) bond lengths are 2.26 Å. In the second Pb site, Pb(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. The Pb(2)-O(1) bond length is 2.28 Å. The Pb(2)-O(4) bond length is 2.25 Å. The Pb(2)-O(5) bond length is 2.27 Å. The Pb(2)-O(6) bond length is 2.18 Å. The Pb(2)-O(7) bond length is 2.22 Å. The Pb(2)-O(8) bond length is 2.14 Å. In the third Pb site, Pb(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 52-56°. Both Pb(3)-O(1) bond lengths are 2.23 Å. Both Pb(3)-O(3) bond lengths are 2.18 Å. Both Pb(3)-O(4) bond lengths are 2.24 Å. In the fourth Pb site, Pb(4) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. The Pb(4)-O(2) bond length is 2.24 Å. The Pb(4)-O(3) bond length is 2.25 Å. The Pb(4)-O(4) bond length is 2.19 Å. The Pb(4)-O(6) bond length is 2.28 Å. The Pb(4)-O(7) bond length is 2.17 Å. The Pb(4)-O(8) bond length is 2.15 Å. In the fifth Pb site, Pb(5) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. Both Pb(5)-O(2) bond lengths are 2.18 Å. Both Pb(5)-O(5) bond lengths are 2.19 Å. Both Pb(5)-O(7) bond lengths are 2.27 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(3) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Pb(1), one Pb(4), and one Pb(5) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Pb(3) and one Pb(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Pb(2), one Pb(3), and one Pb(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Pb(2) and one Pb(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Pb(2), one Pb(4), and one Pb(5) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Pb(2) and one Pb(4) atom.