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四元有序替代化合物Y(Rh,Ni)Ni_4Si_3的合成、结构及成键特性
Authors
毛少瑜
赵景泰
Publication date
1 January 1998
Publisher
Abstract
电弧熔炼方法合成了y(rH,nI)nI4SI3,单晶X射线衍射方法测定了晶体结构.晶体学及结构修正参数:化学式y(rH.42nI.58)nI4SI3,Mr=605.23,正交晶系,ynI5SI3替代类型,(62)Pn-MA,A=1.8797(7)nM,b=0.37860(3)nM,C=0.68049(9)nM,V=0.48427(7)nM3,z=4,dX=6.653g/CM3,μ=31.437MM-1(λMOkα=0.07107nM),f(000)=912,T=296k,对于30个最小二乘修正参数和239个独立可观察衍射点Wr=0.052.nI原子处于SI的四面体配位中心且近邻原子数为12,而rH则处于SI的四方锥中心且近邻原子数为14个,符合金属间化物中原子的配位数规律,也说明在此化合物结构中几何堆积因素占了很重要地位.国家自然科学青年基金;国家教委资助优秀年轻教师基
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Last time updated on 16/06/2016