Structure of Pb{sup II}Sn{sup IV}(PO{sub 4}){sub 2}: Stereochemical activity of the lead II lone pair

Journal Article · Fri May 01 00:00:00 EDT 1998 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1997.7735· OSTI ID:642215

Morin, E; Wallez, G; Jaulmes, S; Couturier, J C; Quarton, M ^[1]

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1. Univ. Pierre et Marie Curie, Paris (France). Lab. de Cristallochimie du Solide

Flux-grown single crystals of the new compound PbSn(PO{sub 4}){sub 2} have been studied by X-ray diffraction. It crystallizes in monoclinic space group P2{sub 1}/n (no. 14), with cell parameters a = 4.861(6) {angstrom}, b = 14.75(2) {angstrom}, c = 8.80(2) {angstrom}, {beta} = 93.0(1){degree}, Z = 4. Its structure is related to the yavapaiite type with a skeleton made up of corner-linked SnO{sub 6} octahedra and PO{sub 4} tetrahedra, but the lead atoms are located in double tunnels instead of sheets. An active Pb{sup II} lone pair has been localized from electrostatic interactions in order to explain this original structure.

• OSTI ID: 642215
• Journal Information: Journal of Solid State Chemistry, Vol. 137, Issue 2; Other Information: PBD: May 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LEAD PHOSPHATES
TIN PHOSPHATES
MONOCRYSTALS
X-RAY DIFFRACTION
MONOCLINIC LATTICES
LATTICE PARAMETERS
EXPERIMENTAL DATA