Sr2PbO4 crystallizes in the orthorhombic Pbam space group. Sr(1) is bonded in a 7-coordinate geometry to three equivalent O(2) and four equivalent O(1) atoms. Pb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form edge-sharing PbO6 octahedra. There are two inequivalent O sites. In the first O site, O(2) is bonded to three equivalent Sr(1) and two equivalent Pb(1) atoms to form OSr3Pb2 trigonal bipyramids that share corners with four equivalent O(1)Sr4Pb trigonal bipyramids, corners with eight equivalent O(2)Sr3Pb2 trigonal bipyramids, edges with two equivalent O(2)Sr3Pb2 trigonal bipyramids, and edges with six equivalent O(1)Sr4Pb trigonal bipyramids. In the second O site, O(1) is bonded to four equivalent Sr(1) and one Pb(1) atom to form distorted OSr4Pb trigonal bipyramids that share corners with four equivalent O(2)Sr3Pb2 trigonal bipyramids, corners with five equivalent O(1)Sr4Pb trigonal bipyramids, edges with four equivalent O(1)Sr4Pb trigonal bipyramids, and edges with six equivalent O(2)Sr3Pb2 trigonal bipyramids.
Sr2PbO4 crystallizes in the orthorhombic Pbam space group. Sr(1) is bonded in a 7-coordinate geometry to three equivalent O(2) and four equivalent O(1) atoms. There are a spread of Sr(1)-O(2) bond distances ranging from 2.53-2.86 Å. All Sr(1)-O(1) bond lengths are 2.53 Å. Pb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form edge-sharing PbO6 octahedra. Both Pb(1)-O(1) bond lengths are 2.12 Å. All Pb(1)-O(2) bond lengths are 2.30 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded to three equivalent Sr(1) and two equivalent Pb(1) atoms to form OSr3Pb2 trigonal bipyramids that share corners with four equivalent O(1)Sr4Pb trigonal bipyramids, corners with eight equivalent O(2)Sr3Pb2 trigonal bipyramids, edges with two equivalent O(2)Sr3Pb2 trigonal bipyramids, and edges with six equivalent O(1)Sr4Pb trigonal bipyramids. In the second O site, O(1) is bonded to four equivalent Sr(1) and one Pb(1) atom to form distorted OSr4Pb trigonal bipyramids that share corners with four equivalent O(2)Sr3Pb2 trigonal bipyramids, corners with five equivalent O(1)Sr4Pb trigonal bipyramids, edges with four equivalent O(1)Sr4Pb trigonal bipyramids, and edges with six equivalent O(2)Sr3Pb2 trigonal bipyramids.