Pb2Nb2O7 crystallizes in the cubic Fd-3m space group. The structure consists of one NbO3 framework and one Pb2O framework. In the NbO3 framework, Nb(1) is bonded to six equivalent O(2) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 38°. O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms. In the Pb2O framework, Pb(1) is bonded in a distorted linear geometry to two equivalent O(1) atoms. O(1) is bonded to four equivalent Pb(1) atoms to form corner-sharing OPb4 tetrahedra.
Pb2Nb2O7 crystallizes in the cubic Fd-3m space group. The structure consists of one NbO3 framework and one Pb2O framework. In the NbO3 framework, Nb(1) is bonded to six equivalent O(2) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 38°. All Nb(1)-O(2) bond lengths are 2.03 Å. O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms. In the Pb2O framework, Pb(1) is bonded in a distorted linear geometry to two equivalent O(1) atoms. Both Pb(1)-O(1) bond lengths are 2.35 Å. O(1) is bonded to four equivalent Pb(1) atoms to form corner-sharing OPb4 tetrahedra.