In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 70, No. 9 ( 2015-9-1), p. 649-658
Abstract:
The potassium pentaborate KB 5 O 7 (OH) 2 reported herein crystallizes in the monoclinic space group P 2 1 /c (no. 14) with the lattice parameters a = 904.8(2), b = 753.2(2), c = 1214.9(5) pm, β = 117.16(2)°, and V = 0.73663(5) nm 3 ( Z = 4). It is a disordered structural variant of an already known compound with the same composition ( a = 766.90(3), b = 904.45(3), c = 1223.04(4) pm, β = 119.132(2)°, and V = 0.74101(5) nm 3 ( Z = 4)) reported by Wu in 2011. The disorder of the potassium cation in the single crystal structure determination of KB 5 O 7 (OH) 2 presented here leads to a remarkably elongated a axis and a corresponding reduction of the length of the b axis in comparison to the ordered compound. The disordered variant was obtained through a hydrothermal synthesis from KNO 3 , B 2 O 3 , and Ce(NO 3 ) 3 ·6H 2 O with a molar ratio of 1:1:0.07.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-2015-0064
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2015
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
Permalink