Synthesis, crystal structure and vibrational spectra characterization of M{sup I}La(PO{sub 3}){sub 4} (M{sup I}=Na, Ag)

Journal Article · Tue Nov 15 00:00:00 EST 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.09.011· OSTI ID:20784800

El Masloumi, Mohamed ^[1]; Imaz, Inhar ^[1]; Chaminade, Jean-Pierre ^[1]; Videau, Jean-Jacques ^[1]; Couzi, Michel ^[2]; Mesnaoui, Mohamed ^[3]; Maazaz, Mohamed ^[3]

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1. Institut de Chimie de la Matiere Condensee de Bordeaux, UPR 9048, CNRS, 87, Avenue du Dr A. Schweitzer, 33608 Pessac cedex (France)
2. Laboratoire de Physico-Chimie Moleculaire, UMR 5803, CNRS, 351, cours de la Liberation, 33405 Talence cedex (France)
3. Laboratoire de Chimie de Solide Mineral, Faculte des Sciences Semlalia, B. P. 2390 Marrakech (Morocco)

The single crystals of lanthanum metaphosphate MLa(PO{sub 3}){sub 4} (M=Na, Ag) have been synthesized and studied by a combination of X-ray crystal diffraction and vibrational spectroscopy. The sodium and silver compounds crystallize in the same monoclinic P2{sub 1}/n space group (C{sub 2}{sup 5}h factor group) with the following respective unit cell dimensions: a=7.255(2), b=13.186(3), c=10.076(2)A, {beta}=90.40(2){sup o}, V=963.0(4)A{sup 3}, Z=4 and a=7.300(5), b=13.211(9), c=10.079(7)A, {beta}=90.47(4){sup o}, V=972.09(12)A{sup 3}, Z=4. This three-dimensional framework is built of twisted zig-zag chains running along a direction and made up of PO{sub 4} tetrahedra sharing two corners, connected to the LaO{sub 8} and NaO{sub 7} or AgO{sub 7} polyhedra by common oxygen atoms to the chains. The infrared and Raman vibrational spectra have been investigated. A group factor analysis leads to the determination of internal modes of (PO{sub 3}){sup -} anion in the phosphate chain.

• OSTI ID: 20784800
• Journal Information: Journal of Solid State Chemistry, Vol. 178, Issue 11; Other Information: DOI: 10.1016/j.jssc.2005.09.011; PII: S0022-4596(05)00401-9; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LANTHANUM COMPOUNDS
LATTICE PARAMETERS
MONOCLINIC LATTICES
MONOCRYSTALS
PHOSPHORUS COMPOUNDS
SILVER COMPOUNDS
SODIUM COMPOUNDS
SPACE GROUPS
SPECTRA
SYNTHESIS
X-RAY DIFFRACTION