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Hexacyanoferrate(III), Hexacyanocobaltate(III), 4-(2-aminoethyl)pyridine, Coordination polymer


In this study, the complexes,  given with the formula (NH4)[Cd(µ-4aepy)2Fe(µ-CN)2(CN)4]n and (NH4)[Cd(µ-4aepy)2Co(µ-CN)2(CN)4]n,,  obtained by using cadmium(II), 4-(2-aminoethyl)pyridine (4aepy) and hexacyanoferrate(III) or hexacyanocobaltate(III) were synthesized as powder. Structural characterizations of the obtained compounds were investigated by vibration (FT-IR and Raman) spectroscopy, elemental, thermal and powder-XRD techniques. Vibration spectra of the complexes were recorded between 4000-225 cm-1 and were confirmed by the results of thermal and elemental analyses. The structural properties of the complexes were investigated by considering the characteristic bands of the ligands from the vibration spectra. Additionally, vibration spectra of the complexes were observed two different ν(CN) absorption bands which act as bridge and terminal. The spectral data show that the characteristic bands of 4aepy were shifted to lower and high frequencies. These shifts arise due to bounding metal and coupling of metal-ligand vibration modes. Thermal behaviors of the complexes are investigated between the temperature ranges of 30-1000 °C in static air atmosphere.    


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