Synthesis and structural characterization of Zintl anions containing the tris(ethylenediamine)-zinc cation: [Zn(N2C2H8)(3)][Te-3]center dot(0.5en) and [Zn(N2C2H8)(3)](2)[Sn2Te6]center dot(en)

被引:44
作者
ShreeveKeyer, JL [1 ]
Warren, CJ [1 ]
Dhingra, SS [1 ]
Haushalter, RC [1 ]
机构
[1] NEC RES INST,PRINCETON,NJ 08540
关键词
Zintl anion; crystal structure; zinc; tellurium; tin; electrochemical synthesis;
D O I
10.1016/S0277-5387(96)00367-1
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Two Zintl anions which contain the [tris(ethylenediamine)-zinc](2+) cation have been synthesized and structurally characterized by single-crystal X-ray diffraction. When a constant current of 1 mA is applied between a ZnTe10 alloy cathode and a Ni plate anode, in a saturated solution of tetrapropylammonium bromide in ethylenediamine, a deep red-purple solution is generated around the cathode as polyanions are generated. After a few days, small, black crystals formed, which were identified by single crystal X-ray diffraction as [Zn(N2C2H8)(3)][Te-3]. 0.5(N2C2H8) (1). The 1:1:1 stoichiometric reaction of the Zintl phase K4SnTe4 with ZnCl2 in the presence of (C2H5)(4)NBr in ethylenediamine at 100 degrees C for 1 day in a sealed evacuated quartz tube gave crystals of [Zn(N2C2H8)(3)](2)[Sn2Te6].(en) (2). The structures of 1 and 2 consist of discrete anions which are surrounded in the solid state by the tris(ethylenediamine)-zinc cations. Copyright (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:1193 / 1199
页数:7
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