AGSR[B7O12] - THE FIRST ANHYDROUS QUATERN ARY SILVER(I)-BORATE WITH FOURFOLD COORDINATED SILVER ION AND A NEW BORATE ANION

Authors
WIESCH A BLUHM K
Citation
A. Wiesch et K. Bluhm, AGSR[B7O12] - THE FIRST ANHYDROUS QUATERN ARY SILVER(I)-BORATE WITH FOURFOLD COORDINATED SILVER ION AND A NEW BORATE ANION, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 52(2), 1997, pp. 227-230
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
52
Issue
2
Year of publication
1997
Pages
227 - 230
Database
ISI
SICI code
0932-0776(1997)52:2<227:A-TFAQ>2.0.ZU;2-U
Abstract
Single crystals of AgSr[B7O12] were obtained by using a B2O3 flux-tech nique and Ag2CO3 and SrCO3 as starting materials in a silver ampoule a t 800 degrees C. X-ray investigations on single crystals led to the sp ace group C 2/c with a = 664.2(5); b = 1153.6(3); c = 2198.0(6) pm; be ta = 92,52(3)degrees; Z = 8. Ag+ is fourfold coordinated by oxygen ato ms and forms distorted AgO4 tetrahedra while Sr2+ has nine nearest nei ghbours. The compound contains a hitherto unknown two dimensional bera te anion [B7O12](3-) which contains four trigonal planar BO3 groups an d three BO4 tetrahedra per unit.