SYNTHESIS, STRUCTURE AND THERMOLYSIS OF NH4[RE3BR10]

被引：5
|
作者：
MOLLER, A [1 ]
MEYER, G [1 ]
机构：
[1] UNIV HANNOVER,INST ANORGAN CHEM,CALLINSTR 9,W-3000 HANNOVER 1,GERMANY
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1992年 / 618卷 / 12期
关键词：
RHENIUM COMPLEXES; SYNTHESIS; CRYSTAL STRUCTURE; THERMAL BEHAVIOR;
D O I：
10.1002/zaac.19926180105
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
NH4[Re3Br10] crystallizes as dark brown single crystals upon slow cooling of a hot, saturated hydrobromic-acid solution of [Re3Br9(H2O)2] after the addition of NH4Br. The crystal structure (monoclinic, C2/m (Nr. 12); Z = 4; a = 1461.6(7), b = 1085.6(4), c = 1030.3(7) pm, beta = 92.63(4)-degrees, V(m) = 245.9(4) cm3/mol; R = 0.097, R(w) = 0.043) contains [Re3Br12]- units that share two common edges. These chains run along [010] and are held together by NH4+ ions. Each NH4+ is surrounded by eight Br-from four different chains. The first step of the thermal decomposition at 290-degrees-C is the disproportionation to ReBr3 (ReCl3 type), rhenium metal and (NH4)2[ReBr6]. Secondly, the internal reduction of (NH4)2[ReBr6] at 390-degrees-C to rhenium metal takes place.
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收藏
页码：26 / 29
页数：4
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