首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Trinuclear tris-Co(II) and trans-cobaloxime type Co(III) complexes prepared from Co(II) triflate precursor: Synthesis, structure and properties
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Trinuclear tris-Co(II) and trans-cobaloxime type Co(III) complexes prepared from Co(II) triflate precursor: Synthesis, structure and properties

机译:由三氟甲磺酸钴(II)前体制备的三核三-钴(II)和反钴酸肟型钴(III)配合物:合成,结构和性质

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摘要

Three new coordination compounds, [CO3(DH)(6)]center dot 24H(2)O (I), [Co(DH)(2)Tu(2)]CF3SO3 (II) and [Co(DH)(2)Py-2]CF3SO3 (III) (where DH- = monoanion of dimethylglyoxime, Py = pyridine, Tu = thiourea), were synthesized starting from CO(CF3SO3)(2)center dot 6H(2)O as a substrate. The complexes were characterized by X-ray crystallography, spectroscopic methods (IR, UV-Vis, H-1 and C-13 NMR, MS) and magnetochemistry. Compound I is a neutral, C-3i symmetrical, trinuclear Co(II) complex with two tris-{Co2+(mu-DH)(3)} units connected to the central Co(II) ion via bridging oxygen atoms, saturating the Co(II) octahedral coordination. In the case of II and III, the complex cations have the usual trans-octahedral configuration with two DH-chelating units in the equatorial plane of the Co(III) ion and the apical coordination sites occupied by two neutral monodentate ligands (Py or Tu). (c) 2006 Elsevier Ltd. All rights reserved.
机译:三种新的配位化合物,[CO3(DH)(6)]中心点24H(2)O(I),[Co(DH)(2)Tu(2)] CF3SO3(II)和[Co(DH)(2 )Py-2] CF3SO3(III)(其中DH- =二甲基乙二肟的单阴离子,Py =吡啶,Tu =硫脲)以CO(CF3SO3)(2)中心点6H(2)O为底物开始合成。通过X射线晶体学,光谱方法(IR,UV-Vis,H-1和C-13 NMR,MS)和磁化学表征该配合物。化合物I是中性的C-3i对称三核Co(II)络合物,具有两个通过桥接氧原子连接到中心Co(II)离子的tris- {Co2 +(mu-DH)(3)}单元,使Co饱和(二)八面体协调。在II和III的情况下,复杂的阳离子具有通常的反八面体构型,在Co(III)离子的赤道面上带有两个DH螯合单元,并且顶端的配位点被两个中性单齿配体(Py或Tu)占据)。 (c)2006 Elsevier Ltd.保留所有权利。

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