Copper(II) complex with 6-methylpyridine-2-carboxyclic acid: Experimental and computational study on the XRD, FT-IR and UV–Vis spectra, refractive index, band gap and NLO parameters

Altürk S., Avcı D., Başoğlu A., Tamer Ö., Atalay Y., Dege N.

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol.190, pp.220-230, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 190
  • Publication Date: 2018
  • Doi Number: 10.1016/j.saa.2017.09.041
  • Journal Name: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.220-230
  • Keywords: Copper(II) complex with 6-methylpicolinate, FT-IR and UV–Vis spectra, NLO parameters, Refractive index, TD/DFT//HSEh1PBE calculations, X-ray structure elucidation
  • Bilecik Şeyh Edebali University Affiliated: No

Abstract

Crystal structure of the synthesized copper(II) complex with 6-methylpyridine-2-carboxylic acid, [Cu(6-Mepic)2·H2O]·H2O, was determined by XRD, FT-IR and UV–Vis spectroscopic techniques. Furthermore, the geometry optimization, harmonic vibration frequencies for the Cu(II) complex were carried out by using Density Functional Theory calculations with HSEh1PBE/6-311G(d,p)/LanL2DZ level. Electronic absorption wavelengths were obtained by using TD-DFT/HSEh1PBE/6-311G(d,p)/LanL2DZ level with CPCM model and major contributions were determined via Swizard/Chemissian program. Additionally, the refractive index, linear optical (LO) and non-nonlinear optical (NLO) parameters of the Cu(II) complex were calculated at HSEh1PBE/6-311G(d,p) level. The experimental and computed small energy gap shows the charge transfer in the Cu(II) complex. Finally, the hyperconjugative interactions and intramolecular charge transfer (ICT) were studied by performing of natural bond orbital (NBO) analysis.