Materials Data on Eu2Pb2O7 by Materials Project
Eu2Pb2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Eu3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.30 Å) and six longer (2.52 Å) Eu–O bond lengths. Pb4+ is bonded to six equivalent O2- atoms to form distorted corner-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Pb–O bond lengths are 2.12 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Eu3+ and two equivalent Pb4+ atoms to form a mixture of distorted corner and edge-sharing OEu2Pb2 tetrahedra. In the second O2- site, O2- is bonded to four equivalent Eu3+ atoms to form a mixture of corner and edge-sharing OEu4 tetrahedra.
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