首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Di- and triethanolamine complexes of Co(II), Ni(II), Ni(II), Cu(II) and Zn(II) with thiocyanate: synthesis, spectral and thermal studies. Crystal structure of dimeric Cu(II) complex with deprotonated diethanolamine, [Cu_2(#mu#-dea)_2(NCS)_2]
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Di- and triethanolamine complexes of Co(II), Ni(II), Ni(II), Cu(II) and Zn(II) with thiocyanate: synthesis, spectral and thermal studies. Crystal structure of dimeric Cu(II) complex with deprotonated diethanolamine, [Cu_2(#mu#-dea)_2(NCS)_2]

机译:Co(II),Ni(II),Ni(II),Cu(II)和Zn(II)与硫氰酸盐的二和三乙醇胺配合物:合成,光谱和热研究带有去质子化的二乙醇胺[Cu_2(#mu#-dea)_2(NCS)_2]的二聚Cu(II)配合物的晶体结构

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摘要

New mixed ligand Co(II), Ni(II), Cu(II) and Zn(II) complexes of di- (dea) and triethanolamine (tea) with thiocyanate were synthesized and characterized by elemental analyses, magnetic moments, UV-Vis and IR spectra. All the metal complexes of tea, and the Ni(II) and Zn(II) complexes of dea are mononuclear, while the Co(II) and Cu(II) complexes of dea are dimeric. The crystal structure of the bis(#mu#-diethanolaminato) bis(isothiocyanate)dicopper(II) complex were determined by single crystal X-ray diffraction. The centrosymmetric binuclear complex contains two strongly distorted square-pyramidally coordianted copper ions bound together by two alkoxo bridges. The bridging oxygen is a depotonated oxygen of the ethanolic group of dea. The dea lighand also coordinates to the Cu(II) ions through its nitrogen, while the other ethanolic groups does not involve in coordination. The thiocyanate anion coordinates to the Cu(II) ion with its nitrogen. Thermal reactivity of the complexes was studied using DTA and TG. Degradation of the amine ligands in the complexes occurs in the first stages of decomposition and the thiocyanate anions decompose at higher themperatures to give corresponding metal oxides.
机译:合成了二-(dea)和三乙醇胺(茶)与硫氰酸盐的新型混合配体Co(II),Ni(II),Cu(II)和Zn(II)配合物,并通过元素分析,磁矩,UV-Vis进行了表征和红外光谱。茶的所有金属配合物以及dea的Ni(II)和Zn(II)配合物均为单核,而dea的Co(II)和Cu(II)配合物为二聚体。双(#mu#-二乙醇胺基)双(异硫氰酸酯)二铜(II)配合物的晶体结构通过单晶X射线衍射测定。中心对称的双核络合物包含由两个烷氧基桥键合在一起的两个强烈扭曲的方金字塔型坐标的铜离子。桥接氧是dea的乙醇基团的去离子化的氧。 dea lighand还通过其氮与Cu(II)离子配位,而其他乙醇基不参与配位。硫氰酸根阴离子通过其氮与Cu(II)离子配位。使用DTA和TG研究了配合物的热反应性。配合物中胺配体的降解发生在分解的第一阶段,硫氰酸根阴离子在较高的官能度下分解,得到相应的金属氧化物。

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