title: Synthesis and DFT calculation of a novel 5,17-di(2-antracenylazo)-25,27-di(ethoxycarbonylmethoxy)-26,28-dihydroxycalix[4]arene.
abstract: In this study, 5,17-di(2-antracenylazo)-25,27-di(ethoxycarbonylmethoxy)-26,28-dihydroxycalix[4]arene has been synthesized from 2-aminoantracene and 25,27-dihydroxy-26,28-diethylacetate calix[4]arene. In order to identify the molecular structure and vibrational features of the prepared azocalix[4]arene, FT-IR and (1)H NMR spectral data have been used. FT-IR spectrum of the studied molecule is recorded in the region 4000-400 cm(-1). (1)H NMR spectrum is recorded for 0.1-0.2 M solutions in DMSO-d6 solution. The molecular geometry, infrared spectrum are calculated by the density functional method employing B3LYP level with different basis sets, including 6-31G(d) and LanL2DZ. The chemical shifts calculation for (1)H NMR of the title molecule is calculated by using by Gauge-Invariant Atomic Orbital method by utilizing the same basis sets. The total density of state, the partial density of state and the overlap population density of state diagram analysis are done via GaussSum 3.0 program. Frontier molecular orbital (HOMO-LUMO) and molecular electrostatic potential surface on the title molecule are carried out for various intramolecular interactions that are responsible for the stabilization of the molecule. The experimental results and theoretical calculations have been compared, and they are found to be in good agreement.
authors.affiliation: Pamukkale University, Faculty of Science-Arts, Department of Physics, 20070 Denizli, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Bayrakdar
authors.affiliation: Pamukkale University, Faculty of Science-Arts, Department of Physics, 20070 Denizli, Turkey.
authors.forename: H H
authors.initials: HH
authors.lastname: Kart
authors.affiliation: Pamukkale University, Faculty of Engineering, Department of Chemical Engineering, 20017 Denizli, Turkey.
authors.forename: S
authors.initials: S
authors.lastname: Elcin
authors.affiliation: Pamukkale University, Faculty of Engineering, Department of Chemical Engineering, 20017 Denizli, Turkey.
authors.forename: H
authors.initials: H
authors.lastname: Deligoz
authors.affiliation: Department of Mechatronics Engineering, H.F.T. Technology Faculty, Celal Bayar University, Turgutlu, Manisa, Turkey. Electronic address: mehmet.karabacak@cbu.edu.tr.
authors.forename: M
authors.initials: M
authors.lastname: Karabacak
mesh_terms: D047250:Calixarenes / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D011789:Quantum Theory; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D047250:Calixarenes
keywords: Calix[4]arene; DFT; FT-IR; Molecular structure; NMR