The preparation, structure and fluxional behaviour of isonitrile derivatives of Cp2Fe2(CO)4-x(CS)x (x = 1, 2)
作者:James A.S. Howell、Pradeep Mathur、Rajesh Kumar、Anthony R. Manning、Frederic S. Stephens
DOI:10.1016/s0022-328x(00)99146-0
日期:1984.2
The complexes Cp2Fe2(CO)2(CS)(CNR) (R = Me, Et, Pri, But; Cp = η5-C5H5) exist in solution as interconverting Cp(CO)Fe(μ-CO)(μ-CS)Fe(CNR)Cp ∡ Cp(CO)Fe(μ-CS)(μ-CNR)Fe(CO)Cp isomers, with the proportion of the bridged isonitrile isomer increasing in the order But < Pri < Et < Me. A single crystal X-ray determination of the CNPri derivative shows it to have a cis-Cp(CO)Fe(μ-CO)(μ-CS)Fe(CNPri)Cp geometry