D Gianolio et al 2009 J. Phys.: Conf. Ser. 190 012140 doi:10.1088/1742-6596/190/1/012140
D Gianolio1, E Groppo1, J Estephane2, C Prestipino3, S Nikitenko4, A Zecchina1, S Bordiga1, M Taoufik2, E A Quadrelli2, J M Basset2 and C Lamberti1
Show affiliationsOrganometallic 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.
78.70.Dm X-ray absorption spectra
82.80.Gk Analytical methods involving vibrational spectroscopy
81.20.-n Methods of materials synthesis and materials processing
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Issue 1 (2009)
D Gianolio et al 2009 J. Phys.: Conf. Ser. 190 012140
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