SYNTHESIS, CHARACTERIZATION OF CYANIDE COMPLEXES WITH 2- (HYDROXYMETHYL)PYRIDINE BY VIBRATIONAL SPECTROSCOPIC, THERMAL STUDIES AND ELECTRICAL PROPERTIES

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SAYIN E., KÜRKÇÜOĞLU G. S.

JOURNAL OF SCIENCE AND TECHNOLOGY A- APPLIED SCIENCES AND ENGINEERING, cilt.24, sa.4, ss.216-229, 2023 (Hakemli Dergi)

Özet

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.