Yazar "Şahin, O." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    COPPER(II) COMPLEX OF THE PYRAZINE-MODULATED OLIGO-α-AMINOPYRIDINE AS A COORDINATION POLYMERS’ PROMISING BUILDING BLOCK
    (Baku: Chemical Problems Journal, 2025) Ismayilova, S.Z.; Ismayilov, R.H.; Tagiyev, D.B.; Yalcin, B.; Şahin, O.; Medjidov, A.A.; Huseynova, M.T.
    Through the pyrazine-modulated tetrapyridyltriamine ligand N2-(pyrazin-2-yl)-N6-(6-(pyrazin-2ylamino)pyridin-2-yl)pyridine-2,6-diamine (H3pzpz) (1), a new mononuclear copper(II) complex [Cu(H3pzpz)(NO3)]·NO3·3H2O (2) has been synthesized and structurally characterized. The copper(II) atom in complex 2 exhibits a distorted square pyramidal geometry with an Addison parameter value of 0.39 (σ = 0.39). In compound (2), H3pzpz (1) acts as a tetradentate N4-donor ligand and coordinates to the Cu(1) ion in an anti-anti-anti-anti conformation. The single crystal X-ray analysis revealed a distorted square pyramidal geometry of the complex (2), which is consistent with the parameters of EPR spectra, measured magnetic moment susceptibility, and electronic spectrum studies. Observed extensive intermolecular hydrogen bond interactions (classical and non-classical) play an important role in the formation of the 3D supramolecular network and crystal packing of this complex. The complex (2) has been identified as a promising building block for the construction of coordination polymers. © 2025, Baku: Chemical Problems Journal. All rights reserved.
  • [ X ]
    Öğe
    (E)-1-[4-(2-hydroxy-5-methoxybenzylideneamino)-phenyl]ethanone and (E)-1-[4-(2-hydroxy-4-methoxybenzylideneamino)phenyl]ethanone: X-ray and DFT-calculated structures
    (2011) Şahin, O.; Büyükgüngör, O.; Albayrak, Ç.; Odabasoglu, M.
    The isomeric structures of (E)-1-[4-(2-hydroxy-5-methoxybenzylideneamino)- phenyl] ethanone (I) and (E)-1-[4-(2-hydroxy-4-methoxybenzylideneamino)phenyl] ethanone (II), both C16H15NO3, have been determined using X-ray diffraction techniques and characterized by IR, and their molecular structures have also been optimized at the B3LYP/6-31G(d,p) level using density functional theory (DFT). The energetic behaviors of the title compounds in solvent media have been examined using B3LYP method with the 6-31G(d,p) basis set by applying the polarizable continuum model (PCM). The total energies of the title compounds decrease with the increasing polarity of the solvent. In addition, DFT calculations of the title compounds' molecular electrostatic potentials (MEP) were performed at the B3LYP/6-31G(d,p) level of theory. X-ray study shows that the title compounds both have strong intramolecular O-H⋯N hydrogen bonds. The molecules of I are linked into a one-dimensional framework structure by C-H⋯ π π interactions, while in II, intermolecular p⋯ π interactions result in the formation of infinite chains running along the [010]. Copyright © 2008 Chinese Journal of Structural Chemistry.