In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 51, No. 2 ( 1996-2-1), p. 172-174
Abstract:
Single crystals of strontium danburite, SrB 2 Si 2 O 8 , were found after high-pressure treatment of SrSiO 3 /SiO 2 /Al 2 O 3 mixtures at 40 kbar and 1400°C, obviously formed by an unwanted side reaction with the boron oxide-containing boron nitride capsules used. The crystals are orthorhombic, space group Pnma, with a = 8.1891 (5), b = 7.9311 (6), c = 8.9284(5) Å and Z = 4. The structure was refined to R = 0.031, R w = 0.028 for 590 independent, absorption-corrected reflections. SrB 2 Si 2 O 8 is isostructural with danburite (CaB 2 Si 2 O 8 ). The structure comprises a tetrahedral framework of ordered B 2 O 7 and Si 2 O 7 groups which contains Sr in irregular coordination.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-1996-0202
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1996
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
