TLCU(OH)CO3 - A NEW BASIC THALLIUM COPPER CARBONATE

被引：2
作者：
ADAM, A
ZHENG, YQ
机构：
[1] Institut für Anorganische Chemie, Universität zu Köln, Köln, D‐50939
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1994年 / 620卷 / 10期
关键词：
THALLIUM-MU-CARBONATO-MU-HYDROXO-COPPER(II); SYNTHESIS; CRYSTAL STRUCTURE; THERMAL DECOMPOSITION; IR-SPECTROSCOPY; MAGNETIC PROPERTIES;
D O I：
10.1002/zaac.19946201008
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
TlCu(OH)CO3 was prepared from carbonate solutions. Its crystal structure was determined (hexagonal, P6(3)/m (Nr. 176), a = 1084.9(1), b = 611.8(1) pm, V(EZ) = 623.6(1) x 10(6) pm3, Z = 6, R = 0.036, Rw = 0.020). Structural features are Cu-O chains bridged by carbonate groups and tunnels parallel [0 0 1]. The thermal behaviour of the new carbonat was examined with TG/DTA- and Simon-Guinier-techniques. The decomposition occurs in two steps to the products Tl2O and CuO. Magnetic measurements show Curie-paramagnetism with theta(Curie) = 2.7 K. A ferromagnetic arrangement of the Cu2+-moments was detected below 4.8K. An IR-spectrometric characterisation in comparison with other copper-carbonato complexes will be discussed.
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页码：1707 / 1713
页数：7
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