The interaction of adsorbed probe molecules with $Co^{2+}$ cations in exchange position were investigated in the skeletal transmission window region. The position of the band of oxygen ring perturbed by $Co^{2+}$ provides information on the electron-acceptor properties of cation as well as the strength of interaction of cation with framework oxygens and with adsorbed molecules. The interaction of $Co^{2+}$ with CO, NO, $H_{2}O$, ammonia, acetylene, ethene, benzene and formaldehyde was investigated. The role of σ donation and π back donation in the interaction of CO and organic molecules was discussed.
keywords in English:
IR spectroscopy, zeolite CoZSM-5, skeletal vibrations