六羰基-(π-二烯基)铁钴配合物[(π-环)Fe(CO)2Co(CO)4]和钌化合物[(π-C5H5)Ru(CO)2Co(CO)4]的结构

A. R. Manning
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引用次数: 12

摘要

研究了[(π-环)Fe(CO)2Co(CO)4]配合物[环= C5H5, MeC5H4和C9H7(茚基)]的红外光谱。在固体状态下,铁衍生物以羰基桥接的形式存在,可能在金属原子之间具有起皱的二微羰基桥接体系。在溶液中,存在一种非桥化(nb)和两种桥化(b)异构体。在极性溶剂中,nb形态的比例随温度的降低而降低,并沿C5H5 > MeC5H4 > C9H7的顺序排列。只观察到钌化合物的铌形式。
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Structures of some hexacarbonyl-(π-dienyl)iron–cobalt complexes, [(π-ring)Fe(CO)2Co(CO)4], and the ruthenium compound [(π-C5H5)Ru(CO)2Co(CO)4]
The i.r. spectra of the [(π-ring)Fe(CO)2Co(CO)4] complexes [ring = C5H5, MeC5H4, and C9H7(indenyl)] have been investigated. In the solid state, the iron derivatives exist as carbonyl-bridged species which probably possess puckered di-µ-carbonyl bridging systems between the metal atoms. In solution, one non-bridged (nb) and two bridged (b) isomers are present. The proportions of the nb forms decrease with decreasing temperature, in polar solvents, and along the series C5H5 > MeC5H4 > C9H7. Only the nb form of the ruthenium compound has been observed.
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