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Title: Formation and reactivity of CrII carbonyls hosted in polar and non polar supports
Authors: Gianolio, Diego
Groppo, Elena
Estephane, Jane 
Prestipino, Carmelo
Nikitenko, Sergej
Zecchina, Adriano
Bordiga, Silvia
Taoufik, Mostafa
Quadrelli, Alessandra Elsje
Basset, Jean Marie
Lamberti, Carlo
Affiliations: Department of Chemical Engineering 
Issue Date: 2009
Part of: Journal of physics: conference series
Volume: 190
Issue: 1
Start page: 1
End page: 7
Organometallic complexes hosted inside porous frameworks are particularly interesting because of possible application in heterogeneous catalysis or electronic devices and optical materials. We present here a detailed spectroscopic investigation on the structure and reactivity towards simple reagents (such as CO) of chromocene molecules (Cp2Cr) encapsulated into the nanovoids of two different matrices: a non polar polystyrene (PS) and a polar NaY zeolite. We demonstrate that stable Cp2Cr(CO) complexes are formed in PS, while in NaY the presence of high internal electric fields confers to the Cp2Cr molecules a much higher reactivity towards CO. In situ EXAFS data, combined with other spectroscopic techniques and ab initio theoretical calculations, allowed the structural determination of the reaction products and afforded the full comprehension of the complex reactivity of Cp2Cr molecules inside the cavities of PS and NaY hosts.
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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