en
Scientific article
Open access
English

Crystal growth and x-ray structure of metastable a-KCoPO4

Publication date1994
Abstract

Crystal of KCoPO4 were obtained by growth in a gel of tetramethoxysilane/H2O at 64 Deg. The hexagonal crystals have space group P63, a 18.206(1), c 8.5135(8) .ANG., Z = 24. At. coordinates are given. The structure is isotypic with a-KZnPO4. It comprises an ordered three dimensional network of alternating CoO4 and PO4 tetrahedra, which has rings of six tetrahedra of six tetrahedra in the xy plane. These rings from tunnels in the [001] direction, where the K ions are located. Upon heating, the compd. undergoes a phase transition at .apprx.565 Deg; on cooling, the phase transition occurs at 449 Deg, where it transforms into another structure which is yet unknown. The hexagonal structure is a metastable phase.

Keywords
  • Crystal growth
  • Crystal structure (of a-cobalt potassium phosphate)
Funding
  • Swiss National Science Foundation - 1993
Citation (ISO format)
LUJAN PEREZ, Marcos Luis, KUBEL, Frank, SCHMID, Hans. Crystal growth and x-ray structure of metastable a-KCoPO<sub>4</sub>. In: Zeitschrift für Naturforschung. B, A journal of chemical sciences, 1994, vol. 49, n° 9, p. 1256–1262.
Main files (1)
Article (Published version)
Identifiers
  • PID : unige:31348
ISSN of the journal0932-0776
718views
61downloads

Technical informations

Creation11/08/2013 6:51:00 PM
First validation11/08/2013 6:51:00 PM
Update time03/14/2023 8:38:18 PM
Status update03/14/2023 8:38:18 PM
Last indexation02/12/2024 12:41:45 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack