A TiP2O7 superstructure
作者： Stefan T. Norberg , Göran Svensson , Jörgen Albertsson
DOI: 10.1107/S0108270100018709
关键词: Superstructure (condensed matter) 、 Octahedron 、 Chemistry 、 Crystallography 、 Crystal structure 、 Tetrahedron 、 Group (periodic table)
摘要: A room-temperature structural model of titanium pyrophosphate, TiP2O7, has been determined from synchrotron X-ray data. The structure consists TiO6 octahedra and PO4 tetrahedra sharing corners in a three-dimensional network. form P2O7 groups connecting the octahedra. 3 × superstructure differs substantially parent AB2O7 structure. P—O—P bonding angles pyrophosphate group are between 141.21 (12) 144.51 (13)° for those not located on threefold axis. individual somewhat distorted.
chalmers.se
crystallography.net参考文章(14)
Senya Inoue, Nobuyuki Ohtaki, Pyrophosphates as biocompatible packing materials for high-performance liquid chromatography Journal of Chromatography A. ,vol. 645, pp. 57- 65 ,(1993) , 10.1016/0021-9673(93)80617-H
E.J. Baran, The unit cell of hafnium divanadate [1] Journal of The Less Common Metals. ,vol. 46, pp. 343- 345 ,(1976) , 10.1016/0022-5088(76)90225-3
J.S.O Evans, J Hanson, A.W Sleight, R.L Withers, Anin SituTemperature-Dependent Electron and X-ray Diffraction Study of Structural Phase Transitions in ZrV2O7 Journal of Solid State Chemistry. ,vol. 137, pp. 161- 167 ,(1998) , 10.1006/JSSC.1998.7748
Hiroshi Fukuoka, Hideo Imoto, Taro Saito, Preparation of cubic niobium pyrophosphate containing Nb(IV) and topotactic extraction of phosphorus atoms Journal of Solid State Chemistry. ,vol. 119, pp. 98- 106 ,(1995) , 10.1016/0022-4596(95)80014-G
Par I. Tordjman, E. Masse, J. C. Guitel, Structure cristalline du monophosphate KTiPO5 Zeitschrift Fur Kristallographie. ,vol. 139, pp. 103- 115 ,(1974) , 10.1524/ZKRI.1974.139.1-2.103
Xavier Helluy, Claire Marichal, Angelika Sebald, Through-Bond Indirect and Through-Space Direct Dipolar Coupling 31P MAS NMR Constraints for Spectral Assignment in the Cubic 3 × 3 × 3 Superstructure of TiP2O7 Journal of Physical Chemistry B. ,vol. 104, pp. 2836- 2845 ,(2000) , 10.1021/JP993626O
H. V�llenkle, A. Wittmann, H. Nowotny, Über Diphosphate vom Typ Me(IV)P 2 O 7 Monatshefte Fur Chemie. ,vol. 94, pp. 956- 963 ,(1963) , 10.1007/BF00902371
W. H. Zachariasen, A general theory of X‐ray diffraction in crystals Acta Crystallographica. ,vol. 23, pp. 558- 564 ,(1967) , 10.1107/S0365110X67003202
E. Banks, R. Sacks, ReP2O7: A new isomorph of ZrP2O7 Materials Research Bulletin. ,vol. 17, pp. 1053- 1055 ,(1982) , 10.1016/0025-5408(82)90131-3
N. Khosrovani, V. Korthuis, A. W. Sleight, T. Vogt, Unusual 180° P−O−P Bond Angles in ZrP2O7 Inorganic Chemistry. ,vol. 35, pp. 485- 489 ,(1996) , 10.1021/IC950844X