Crystal structure of lanthanum metaphosphate LaP/sub 3/O/sub 9/
The crystal structure of LaP/sub 3/O/sub 9/ has been determined by conventional single-crystal X-ray diffraction techniques. The compound is isostructural with NdP/sub 3/O/sub 9/. Crystals are orthorhombic, space group C222/sub 1/ with a = 11.303(4), b = 8.648(5), c = 7.397(3) /Angstrom/, Z = 4, D/sub x/ = 3.45 Mg /times/ m/sup -3/, T = 298(2) K. The structure was refined based on 1000 diffractometer collected reflections with I > 1.96sigma(I). Final agreement factors were: R = 0.027 and R/sub w/ = 0.033. The structure is represented by infinite chains of corner-sharing PO/sub 4/ tetrahedra and edge-sharing LaO/sub 8/ dodecahedra. Lanthanum-oxygen coordination bond lengths vary from 2.415(4) to 2.749(4) /Angstrom/. The closest La-La distance is 4.314(1) /Angstrom/. No evidence was found for ninefold coordination around La atoms.
- Research Organization:
- School of Economics, Wroclaw (Poland)
- OSTI ID:
- 6254743
- Journal Information:
- J. Solid State Chem.; (United States), Vol. 75:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Crystal structure of complex neptunium(V) molybdate Na{sub 2}[(NpO{sub 2}){sub 2}(MoO{sub 4}){sub 2}H{sub 2}O] {center_dot} H{sub 2}O
Synthesis and structure of a three-dimensional lanthanum(III) coordination polymer with mellitate, (La{sub 2}[C{sub 6}(COO){sub 6}](H{sub 2}O){sub 9}){center_dot}2H{sub 2}O
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
42 ENGINEERING
LANTHANUM PHOSPHATES
CRYSTAL STRUCTURE
BOND LENGTHS
EXPERIMENTAL DATA
LATTICE PARAMETERS
MONOCRYSTALS
ORTHORHOMBIC LATTICES
SPACE GROUPS
X-RAY DIFFRACTION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTALS
DATA
DIFFRACTION
DIMENSIONS
INFORMATION
LANTHANUM COMPOUNDS
LENGTH
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RARE EARTH COMPOUNDS
SCATTERING
400201* - Chemical & Physicochemical Properties
420300 - Engineering- Lasers- (-1989)