Structures of diethylenetriaminecopper(II) cations. Part IV. Crystal structure of µ-formato-diethylenetriaminecopper(II) formate

G. Davey, F. S. Stephens
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引用次数: 14

Abstract

The crystal structure of µ-formato-diethylenetriaminecopper(II) formate has been determined by X-ray diffraction methods and refined by full-matrix least-squares procedure. Z= 4 in the orthorhombic unit cell, space group Pnam, with a= 8·954, b= 11·640, and c= 9·676 A. There are no discrete [Cu(dien)(HCO2)]+ ions in the crystal; chains of ions are formed parallel to a, the copper atoms being linked by formate groups in an anti–syn bridging arrangement. Each [Cu(dien)(HCO2)] group possesses mirror symmetry (space-group imposed) and the copper atom environment is essentially square-pyramidal. One oxygen atom co-ordinates to the copper atom at 2·035 A in the plane of the three equal copper–nitrogen bonds (2·012 A) and the apical position is occupied by a second oxygen atom 2·169 A from the copper atom.
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二乙烯三胺铜(II)阳离子结构。第四部分:微甲酸二乙烯三胺铜(II)甲酸的晶体结构
用x射线衍射法测定了微甲酸二乙烯三胺铜(II)的晶体结构,并用全矩阵最小二乘法对其进行了细化。正交单元胞,空间群Pnam中Z= 4, a= 8·954,b= 11·640,c= 9·676 a。晶体中不存在离散的[Cu(dien)(HCO2)]+离子;离子链平行于a形成,铜原子由甲酸基团以反同步桥接排列连接。每个[Cu(dien)(HCO2)]基团具有镜像对称性(空间群施加),并且铜原子环境本质上是方-金字塔形的。在三个相等的铜-氮键平面(2.012 A)上,一个氧原子在2.035 A处与铜原子对应,另一个氧原子在距铜原子2.169 A处与铜原子对应。
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