Anhydrous lithium borate, Li3B11O18, crystal structure, phase transition and thermal expansion

被引：8

作者：

Sennova, Natalia ^{[1
,2
]}

Albert, Barbara ^{[1
]}

Bubnova, Rimma ^{[2
,3
]}

Krzhizhanovskaya, Maria ^{[2
]}

Filatov, Stanislav ^{[2
]}

机构：

[1] Tech Univ Darmstadt, Eduard Zintl Inst Anorgan & Phys Chem, Darmstadt, Germany

[2] St Petersburg State Univ, Dept Crystallog, St Petersburg 199034, Russia

[3] Russian Acad Sci, Inst Silicate Chem, St Petersburg, Russia

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS | 2014年 / 229卷 / 07期

关键词：

crystal Structure; lithium borate; phase transition; thermal expansion; X-ray diffraction; HIGH-TEMPERATURE BEHAVIOR; DEHYDRATION; PARAMETERS; LIB3O5; FORM;

D O I：

10.1515/zkri-2014-1754

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A new lithium borate, Li3B11O18, was synthesized by crystallization from glass, containing an excess of B2O3. The compound crystallizes monoclinic, P2(1)/a, Z=4, a=9.766(5) angstrom, b=7.849(5) angstrom, c=17.899(9) angstrom, beta=100.96(5)degrees, V=1347.0(13) angstrom(3) (R=0.06, wR=0.12). The structure is based upon two interpenetrating frameworks formed by triborate and pentaborate groups. The thermal behaviour of Li3B11O18 was studied using DTA, DSC, and high-temperature XRD. Highly anisotropic thermal expansion and a new high-temperature phase were observed.

引用

页码：497 / 504

页数：8

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