一些含Fe—Sn—Fe键金属有机化合物的穆斯堡尔谱研究

A Mossbauer Study on Some Organometallic Compounds Containing Fe-Sn-Fe Bond

研究了[(π-C_5H_5)Fe(CO)_2]_2Sn(X)(Y)类型化合物的穆斯堡尔谱,表明Fe的参数基本不受X、Y基团性质的影响,而不同X、Y改变Sn上s电子密度从而引起Sn的参数有规则的变化;X,Y基团的作用性质表明Fe-Sn之间不存在π相互作用。

The Mossbauer spectra of compounds with general formula [(π-C_5H_5) Fe- (CO)_2]_2Sn (X)(Y) were studied. The corresponding parameters showed that the parameters for iron were essentially independent on the nature of X and Y. The alternation of X and Y caused the change in s electron density through the shielding of s electron or the substituents inductive effect and subsequently caused the change of tin isomer shifts. The fact that X and Y groups had little effect on iron parameters might be a good evidence for the absence of π interaction between Fe and Sn.