Experimental and Theoretical Vibrational Spectroscopic Study of Zinc (II) Halide Complexes of 4-Acetylpyridine

Yıl 2017, Cilt: 30 Sayı: 4, 553 - 563, 11.12.2017

Yusuf Erdogdu

Öz

In the present work, we present a detailed experimental and theoretical study of the zinc (II) halide complexes of 4-acetylpyridine (abbreviated as 4-Ap) (Zn (L)2 X2, [where L: C7OH7N; X: Cl, Br and I]). The infrared and Raman spectra of the zinc (II) halide complexes of 4-Ap have been recorded between 400-4000 cm-1 and 5-3500 cm-1 regions, respectively. The analysis of the FT-IR and FT-Raman spectra indicates that some structure-spectra correlations. For a given series of isomorphous complexes, the sum of the differences between the values of the vibrational modes of uncoordinated 4-Ap was found to increase in order of second ionization potentials of metal. The molecular geometry and vibrational frequencies of the zinc (II) halide complexes of 4-Ap in the ground state have been calculated by using the Density Functional Method (B3LYP) with LANL2DZ and SDD as basis sets. A complete assignment of the fundamentals was proposed based on the total energy distribution (TED) calculation.

Anahtar Kelimeler

Infrared spectra, Raman Spectra, Density functional theory, 4-Acetylpyridine, Zinc (II) halide complexes

Kaynakça

• [1] Arjunana V., Saravanan I., Marchewka M. K., Mohan S., “A comparative study on vibrational, conformational and electronic structure of 2-chloro-4-methyl-3-nitropyridine and 2-chloro-6-methylpyridine”, Spectrochimica Acta Part A., 92: 305-317, (2012).