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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Synthesis, structure and properties of poly-[(N-(2-hydroxyethyl)-N '-carboxymethyl-1,2-ethylenediamine-N,N '-diacetato)copper(II) hydrate], {[Cu(Hhedta)]center dot H2O}(n)
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Synthesis, structure and properties of poly-[(N-(2-hydroxyethyl)-N '-carboxymethyl-1,2-ethylenediamine-N,N '-diacetato)copper(II) hydrate], {[Cu(Hhedta)]center dot H2O}(n)

机译:聚[[(N-(2-羟乙基)-N'-羧甲基-1,2-乙二胺-N,N'-二乙酰基)水合铜(II)水合物],{[Cu(Hhedta)]中心点H2O}(n)

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摘要

The stoichiometric reaction of N-(2-hydroxyethyl)- 1,2-ethylenediamine-N,N,N'-triacetic acid [H(3)hedta = (HOCH2CH2)(HO2CCH2)NC2H4N(CH2CO2H)(2))] and copper(II) hydroxy-carbonate in water yields crystalline samples of poly-{(N-(2-hydroxyethyl)-N'-carboxymethyl-1,2-ethylenediamine-N,N'-diacet ato)copper(II) hydrate}, {[Cu(Hhedta)] . H2O}(n), (I). The compound was studied by TG analysis (with FT-IR study of the evolved gases), IR, electronic and ESR spectra, magnetic susceptibility data and single crystal X-ray diffraction methods. It crystallises in the orthorhombic system, space group Fdd2 (a = 21.906(2), b = 36.602(4), c = 6.928(1) Angstrom, Z = 16, and final R-1 = 0.029 for 1554 independent reflections). The Cu(II) atom exhibits a very distorted octahedral coordination (type 4+1+1). The Hhedta ligand plays a N,N',O,O',O "-pentadentate chelating role as well as a O,O'-carboxylate bridging one and has a free N-carboxymethyl arm. The bridging carboxylate group of the Hhedta ligand leads to polymeric chains {[Cu(Hhedta)] . H2O}(n) parallel the c axis. A hydrogen bonding network involves all O-H polar bonds (non-ionised carboxylic and alcoholic hydroxyl groups and water molecules). The structure reveals the preferred formation of a copper(II)-(N-2-hydroxyethyl-amino) or copper(II)-(ethanolamino) versus a copper(II)-(N-carboxymethylamino) chelate ring. [References: 87]
机译:N-(2-羟乙基)-1,2-乙二胺-N,N,N'-三乙酸[H(3)杂多=(HOCH2CH2)(HO2CCH2)NC2H4N(CH2CO2H)(2))的化学计量反应水中的羟基碳酸铜(II)产生聚-{(N-(2-羟基乙基)-N'-羧甲基-1,2-乙二胺-N,N'-二乙酰基)水合铜(II)的晶体样品,{[Cu(Hhedta)]。 H 2 O}(n),(I)。通过TG分析(对逸出的气体进行FT-IR研究),IR,电子和ESR光谱,磁化率数据和单晶X射线衍射方法研究了该化合物。它在正交系,空间群Fdd2(a = 21.906(2),b = 36.602(4),c = 6.928(1)埃,Z = 16,最终R-1 = 0.029(1554个独立反射)中结晶)。 Cu(II)原子表现出非常扭曲的八面体配位(类型4 + 1 + 1)。该Hhedta配体起到N,N',O,O',O”-五齿螯合作用以及O,O'-羧酸酯桥连一个的作用,并具有一个游离的N-羧甲基臂。Hhedta配体的桥连羧酸酯基团导致平行于c轴的聚合物链{[Cu(Hhedta)]。H2O}(n)。氢键网络涉及所有OH极性键(非离子化的羧基和醇羟基以及水分子)。铜(II)-(N-羧甲基氨基)螯合环形成铜(II)-(N-2-羟乙基-氨基)或铜(II)-(乙醇氨基)[参考文献:87]

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