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A dinuclear cyano-bridged complex based on hexacyanoferrate(III) and samarium(III) nitrate: synthesis and crystal structure

机译:基于六氰合铁酸盐(III)和硝酸sa(III)的双核氰基桥联配合物:合成和晶体结构

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摘要

A new complex, [Sm(DMF)(4)(H2O)(4)Fe(CN)(6)]. H20 (DMF = N, N-dimethylformamide), has been synthesized and characterized by X-ray single crystal structure and thermogravimetric analyses. The complex crystallizes in the P2(1) space group, with lattice parameters a = 17.583(4) Angstrom, b = 8.870(2) Angstrom, c = 19.845(6) Angstrom, beta = 95.98(3)degrees, V = 3078(1) Angstrom(3), D-x = 1.679 Mg m(-3), D-m = 1.65(1) Mg m(-3), Z = 4. The molecular structure shows that a cyano-bridged bimetallic structure is obtained. The Sm atom is coordinated by eight oxygen atoms of four water molecules and four DMF molecules and one nitrogen atom of the bridging cyanide ligand. The iron atom assumes approximately an octahedral environment surrounded by six CN ligands. The hydrate water molecule is hydrogen-bonded to one of the O atoms bound to Sm. Each terminal CN ligand of the Fe(CN)(6)(3-) entity is hydrogen-bonded to some O atoms of water molecules. An infrared spectrum is also reported. [References: 30]
机译:一种新的络合物,[Sm(DMF)(4)(H2O)(4)Fe(CN)(6)]。合成了H 2 O(DMF = N,N-二甲基甲酰胺),并通过X射线单晶结构和热重分析对其进行了表征。该复合物在P2(1)/ n空间组中结晶,晶格参数a = 17.583(4)埃,b = 8.870(2)埃,c = 19.845(6)埃,beta = 95.98(3)度,V = 3078(1)埃(3),Dx = 1.679 Mg m(-3),Dm = 1.65(1)Mg m(-3),Z =4。分子结构显示获得了氰基桥联的双金属结构。 Sm原子由四个水分子和四个DMF分子的八个氧原子和桥接氰化物配体的一个氮原子配位。铁原子假定为被六个CN配体围绕的八面体环境。水合物水分子氢键合至与Sm结合的O原子之一。 Fe(CN)(6)(3-)实体的每个末端CN配体均氢键合至水分子的某些O原子。还报告了红外光谱。 [参考:30]

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