A TiP2O7 superstructure

Authors
Norberg, ST Svensson, G Albertsson, J
Citation
St. Norberg et al., A TiP2O7 superstructure, ACT CRYST C, 57, 2001, pp. 225-227
Citations number
28
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
57
Year of publication
2001
Part
3
Pages
225 - 227
Database
ISI
SICI code
0108-2701(200103)57:<225:ATS>2.0.ZU;2-3
Abstract
A room-temperature structural model of titanium pyrophosphate, TiP2O7, has been determined from synchrotron X-ray data. The structure consists of TiO6 octahedra and PO4 tetrahedra sharing corners in a three-dimensional networ k. The PO4 tetrahedra form P2O7 groups connecting the TiO6 octahedra. The 3 x 3 x 3 superstructure differs substantially from the parent AB(2)O(7) str ucture. The P-O-P bonding angles of the pyrophosphate group are between 141 .21 (12) and 144.51 (13)degrees for those groups not located on the threefo ld axis. The individual TiO6 octahedra and PO4 tetrahedra are somewhat dist orted.