M(SCN)2 (M = Eu, Sr, Ba):: Crystal structure, thermal behaviour, vibrational spectroscopy

被引：0
|
作者：
Wickleder, C [1 ]
机构：
[1] Univ Cologne, Inst Anorgan Chem, D-50939 Cologne, Germany
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2001年 / 627卷 / 07期
关键词：
europium; alkaline earth metals; thiocyanates;
D O I：
10.1002/1521-3749(200107)627:7<1693::AID-ZAAC1693>3.0.CO;2-U
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Single crystals of M(SCN)(2) (M = Eu, Sr, Ba) have been obtained via metathesis of NaSCN and MCl2 (M = Eu, Sr, Ba) at 340 degreesC. The isotypic crystal structures of the thiocyanates M(SCN)(2) (C2/c, Z=4, Eu: a=979.3(2), b = 660.8(1), c = 815.7(2) pm, beta= 91.58(3)degrees, R-all = 0.0245, Sr: a=985.5(2), b=662.9(2), c=819.6(2) pm, beta =91.29(3)degrees, R-all= 0.0435, Ba: a = 1018.8(2), b = 687.2(1), c = 852.2(1) pm, beta = 92.43(2)degrees, R-all= 0.0392) contain alternating layers of M2+ and SCN-. According to M(SCN)(4/4)(NCS)(4/4) M2+ is eight-coordinated by four sulfur and four nitrogen atoms forming a square antiprism. Thermal investigations show that the compounds melt without decomposition. Vibrational spectroscopic investigations are presented and discussed.
引用
收藏
页码：1693 / 1698
页数：6
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