一种新型二茂铁钴(Ⅱ)配合物的合成、晶体结构和光谱性质(英文)

Synthesis,crystal structure and spectroscopic study of a new cobalt(Ⅱ) complex containing biferrocene

利用配体乙酰二茂铁缩肼基硫代甲酸苄酯(HL)合成了一种新型钴(Ⅱ)桥连的配合物CoL2,并通过元素分析、红外光谱、紫外光谱和X射线单晶衍射对其结构进行表征.该配合物的晶体结构表明,配体是通过失去一个质子形成的异构硫醇和β-氮原子与钴(Ⅱ)离子进行双齿配位.同时还对它的57Fe穆斯堡尔谱进行了研究,结果表明中心钴(Ⅱ)能直接影响铁(Ⅱ)的氧化态.

In this paper,a new cobalt（Ⅱ）-bridged complex was successfully synthesized and characterized by elemental analysis,IR spectroscopy,UV-Vis absorption spectroscopy,single crystal X-ray diffraction and 57Fe Mssbauer spectroscopy.The crystal structure shows that the ligand HL（HL= S-benzyl-N-（ferrocenyl-1-methyl-methylidene）dithiocarzazate） loses a proton forming the tautomeric thiol and acts as a single negatively charged bidentate ligand coordinating to cobalt（Ⅱ） via the mercapto sulphur and β-nitrogen atom,resulting in the title complex CoL2.Furthermore,the 57Fe Mssbauer measurement indicated directly that Co（Ⅱ） can influence the oxidation state of Fe（Ⅱ）.