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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis and crystal structure of ammine copper(I) cyanamide, Cu-4(NCN)(2)NH3
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Synthesis and crystal structure of ammine copper(I) cyanamide, Cu-4(NCN)(2)NH3

机译:氨化铜(I)氰酰胺Cu-4(NCN)(2)NH3的合成及晶体结构

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摘要

Ammine copper(I) cyanamide, CU4(NCN)(2)NH3, was obtained as a white powder from the reaction between CuCl and H2NCN in concentrated ammonia solution. X-ray and neutron diffraction experiments yield the hexagonal system with space group P63mc (no. 186) and a = 5.7661(1) &ANGS;, c = 10.7817(3) &ANGS;, and Z = 2. The structure is characterized by layers of monovalent copper ions with an average Cu-Cu distance of 2.89 &ANGS;, and the layers are connected through two crystallographically independent NCN2- units. While one Cu-I is linearly bonded to an NCN2- unit and an additional NH3 molecule, the other Cu-I is also linearly coordinated but by two NCN2- groups; the Cu-N bonds lie between 1.86-1.98 &ANGS;. The C-N bond lengths and angles evidence both NCN2- groups as essentially linear cyanamides.
机译:通过在浓氨溶液中CuCl和H2NCN之间的反应获得白色粉末状的氨铜氰胺(I)氰化物CU4(NCN)(2)NH3。 X射线和中子衍射实验得出六边形系统,其空间群为P63mc(编号186),a = 5.7661(1)&ANGS;,c = 10.7817(3)&ANGS;,Z =2。该结构的特征在于层铜离子的平均单价铜离子的平均Cu-Cu距离为2.89,并且各层通过两个晶体学独立的NCN2-单元连接。尽管一个Cu-1与NCN2-单元和另一个NH3分子线性键合,但另一个Cu-I也由两个NCN2-基团线性配位。 Cu-N键在1.86-1.98之间。 C-N键的长度和角度证明两个NCN2-基团基本上都是线性氰胺。

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