The title compound crystallizes in the tetragonal system, a = 11.733(2) angstrom, c = 15.587(3) angstrom, I4 mm, Z = 10. Data were collected at the Argonne National Laboratory synchrotron source at lambda = 0.15359 angstrom. Least squares refinement on F-2 converged to R1 = 0.039. The oxygen coordination polyhedra around Bi and Pb display the distortions typical of 6s(2) lone-pair atoms. One Bi is disordered. Bi-O bonds vary from 2.08(2) to 2.96(1) angstrom. One Pb is in cubic coordination to oxygen and the second Ph is bonded to six oxygen atoms that form a rectangular pyramid and a seventh oxygen is off one of the rectangular faces of the pyramid. Pb-O bonds vary from 2.303(6) to 2.804(17) angstrom. Of the two crystallographically independent P one is in a single tetrahedral coordination while the second is at the center of two disordered tetrahedra. Units of OM4 tetrahedra, M = Bi/Pb, articulate into a three-dimensional framework by corner and edge sharing that is strengthened by comer sharing with PO4 Moieties. (c) 2005 Elsevier Ltd. All rights reserved.