639464-56-5Relevant academic research and scientific papers
Bis-silyl substituted ferrocenylenes, including dicyanovinyl electron-withdrawing groups, as potential non-linear optical materials
Zhao, Xiaoming,Sharma, Hemant K.,Cervantes-Lee, Francisco,Pannell, Keith H.,Long, Gary J.,Shahin, Ahmed M.
, p. 235 - 241 (2007/10/03)
1,1′-Bis-silylferrocenylenes (p-XC6H4 SiMe2-C5H4)2Fe, X=Br (1), CHO (2), CH=C(CN)2 (3) have been synthesized and characterized by NMR and M?ssbauer spectroscopy, single crystal X-ray diffraction and electrochemistry. Complex 1 crystallizes in the centrosymmetric space group P21/n whereas 3 forms in the non-centrosymmetric group Cc. The latter complex exhibits a chain-like structure in the solid state via C-H?N intermolecular hydrogen bonding. The hyperpolarizability of 3 is significantly greater than the related mono-silylferrocene complex (C5H5) Fe(C5H4SiMe2C6H4 CH=C(CN)2) while M?ssbauer spectroscopy exhibits negligible charge transfer between the cyano groups and the ferrocenylene iron center.
