SODIUM METAPERRHENATE, NAREO4 - HIGH-PRESSURE SYNTHESIS OF SINGLE-CRYSTALS AND STRUCTURE REFINEMENT

Authors
ATZESDORFER A RANGE KJ
Citation
A. Atzesdorfer et Kj. Range, SODIUM METAPERRHENATE, NAREO4 - HIGH-PRESSURE SYNTHESIS OF SINGLE-CRYSTALS AND STRUCTURE REFINEMENT, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 50(9), 1995, pp. 1417-1418
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
50
Issue
9
Year of publication
1995
Pages
1417 - 1418
Database
ISI
SICI code
0932-0776(1995)50:9<1417:SMN-HS>2.0.ZU;2-M
Abstract
Single crystals of sodium metaperrhenate, NaReO4, have been obtained b y oxidation of rhenium metal with sodium nitrate under high pressure-h igh temperature conditions (modified Belt-type apparatus, 4 kbar, 400 degrees C, Au-capsules). The crystals are tetragonal, space group I4(1 )/a, with a = 5.3654(4). c = 11.732(2) Angstrom and Z = 4. The structu re was refined to R = 0.026, R(w) = 0.013 for 382 unique, absorption-c orrected reflections. The scheelite-type structure for NaReO4, propose d by Beintema in 1937, could be confirmed. It consists of isolated ReO 4 tetrahedra (Re-O = 1.728(2) Angstrom), connected by NaO8 dodecahedra ([Na-O] = 2.582(2) Angstrom).