Yazar "Karabiyik, Hasan" için listeleme
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1-((E)-{(1R,2R)-2-[(E)-(2-hydroxy-1-naphthyl)methyleneamino]cyclohexyl}iminiomethyl)naphthalen-2-o late : a Schiff base compound having both OH and NH character
Karabiyik, Hasan; Guzel, Bilgehan; Aygun, Muhittin; Boga, Gulnaz; Büyükgüngör, Orhan (Blackwell Publishing, 2007)The title Schiff base compound, C28H26N2O2, possesses both OH and NH tautomeric character in its molecular structure. While the OH side of the compound is described as an intermediate state, its NH side adopts a predominantly ... -
Anchor Effect on Pedal Motion Observed in Crystal Phase of an Azobenzene Derivative
Karabiyik, Hasan; Petek, Hande; Iskeleli, Nazan Ocak; Albayrak, Cigdem; Agar, Erbil (Springer/Plenum Publishers, 2011)Some molecules having a molecular skeleton similar to that of stilbenes and azobenzenes show orientational disorder in the crystals due to pedal motion. Heretofore, the orientational disorder through pedal motion has been ... -
Aromaticity balance, pi-electron cooperativity and H-bonding properties in tautomerism of salicylideneaniline: the quantum theory of atoms in molecules (QTAIM) approach
Karabiyik, Hasan; Sevincek, Resul; Petek, Hande; Aygun, Muhittin (Springer, 2011)Topological analysis based on DFT calculations regarding proton transfer reaction in salicylideneaniline (SA) was performed to scrutinize possible changes in the intramolecular H-bond, pi-electron delocalization and ... -
Conformational analysis and crystal structure of (E)-3-methyl-4-(p-tolyldiazenyl)phenol
Karabiyik, Hasan; Iskeleli, Nazan Ocak; Albayrak, Cigdem; Agar, Erbil (Springer/Plenum Publishers, 2007)The single crystal X-ray diffraction analysis of the title compound, C14H14N2O, reveals that an interesting intermolecular or extended structure (hydrogen-bonded polymeric zigzag chains) is formed by linking its monomer ... -
Crystallographic and conformational analysis of (E)-2-isopropyl-4-(p-tolyldiazenyl)phenol
Iskeleli, Nazan Ocak; Karabiyik, Hasan; Albayrak, Cigdem; Agar, Erbil; Guemruekcueoglu, Ismail Erdem (Springer/Plenum Publishers, 2008)The molecular and crystal structures of the title compound, C(16)H(18)N(2)O, were characterized and determined by single crystal X-ray diffraction method in addition to spectroscopic means such as IR, UV-VIS and (1)H NMR. ... -
Crystallographic and conformational analysis of 1,3-bis(2,4-dimethoxyphenyl)imidazolidine-2-thione
Karabiyik, Hasan; Gunay, M. Emin; Aygun, Muhittin; Cetinkaya, Bekir; Kazak, Canan (Springer/Plenum Publishers, 2006)The molecular and crystal structures of the title compound, C19H22N2O4S, were determined by single crystal X-ray diffraction technique. The title compound crystallizes in space group F d d 2, with a = 30.785(3) angstrom, ... -
Crystallographic and conformational analysis of two novel trans-azo benzene compounds
Karabiyik, Hasan; Petek, Hande; Iskeleli, Nazan Ocak; Albayrak, Cigdem (Springer/Plenum Publishers, 2009)The molecular and crystal structure of (E)-2-Acetyl-4-(2-bromophenyldiazenyl)phenol (1) and (E)-2-Methyl-4-(o-tolyldiazenyl)phenol (2) were characterized and determined by single crystal X-ray diffraction method besides ... -
Desynchronization of pedal motion: Crystallographic and theoretical study of (E)-4-[(4-ethylphenyl)diazenyl]-2-methylphenol
Ocak-Iskeleli, Nazan; Karabiyik, Hasan; Albayrak, Cigdem; Agar, Erbil (Springer/Plenum Publishers, 2008)The single crystal X-ray diffraction analysis of the title compound, C15H16N2O, reveals that its molecules exhibit whole-molecule disorder at both crystal lattice sites due to pedal motion in solid state. The compound ... -
Hydrogen-bridged chelate ring-assisted pi-stacking interactions
Karabiyik, Hasan; Karabiyik, Hande; Iskeleli, Nazan Ocak (Int Union Crystallography, 2012)A salicylideneaniline (SA) derivative, (6Z)-6-({[2-(hydroxymethyl)phenyl]amino}methylidene)-3,5-dimethoxycyclohexa-2,4-dien-1-one monohydrate, has an increased aromaticity within its hydrogen-bridged chelate ring owing to ... -
An intermediate structure trapped in solid-state tautomerization process of (E)-4-[(4-chlorophenylimino)methyl]benzene-1,2,3-triol
Karabiyik, Hasan; Ocak-Iskeleli, Nazan; Petek, Hande; Albayrak, Cigdem; Agar, Erbil (Elsevier, 2008)An intermediate structure between the benzenoid and cis-quinoid form of the title compound was trapped in solid-state tautomerization with the aid of O-H center dot center dot center dot O type intermolecular H-bonds leading ... -
Mesomeric effect on the structural and electronic properties of 4-(2-tert-butyl-4-methylphenoxy)phthalonitrile
Karabiyik, Hasan; Agar, Aysen Alaman; Iskeleli, Nazan Ocak (Springer/Plenum Publishers, 2010)The molecular and crystal structures of the title compound, C19H18N2O, were determined and characterized by single crystal X-ray diffraction and spectroscopic methods. Details of the molecular geometry imply that there is ... -
N-methyl-N-phenylaminomethyl 2-naphthyl ketone: an X-ray diffraction and density functional theory study
Karabiyik, Hasan; Keskin, Sevnur; Ayguen, Muhittin; Arsu, Nergis; Büyükgüngör, Orhan (Blackwell Publishing, 2008)The crystallographically observed molecular structure of the title compound, C19H17NO, and its inverted counterpart are compared with that calculated by density functional theory (DFT) at the B3LYP/6-311++G(d, p) level. ... -
PM3 semiempirical study and its comparison with X-ray crystal structure of 2-methyl-4-(4-methoxyphenylazo)phenol
Iskeleli, Nazan Ocak; Karabiyik, Hasan; Albayrak, Cigdem; Petek, Hande; Agar, Erbil (Springer/Plenum Publishers, 2006)The crystal and molecular structure of 2-methyl-4-(4-methoxyphenylazo)phenol have been determined by X-ray single crystal diffraction technique. The compound crystallizes in the monoclinic space group P2(1)/c with a=9.7763(8) ... -
PM3 semiempirical study and its comparison with X-ray crystal structure of 4-[2-methyl-4-(4-methoxyphenylazo)] phenoxyphtalonitrile
Iskeleli, Nazan Ocak; Karabiyik, Hasan; Albayrak, Cigdem; Petek, Hande; Agar, Erbil (Springer/Plenum Publishers, 2006)The molecular and crystal structures of the title compound, C22H16N4O2, were determined by single crystal X-ray diffraction technique. The title compound crystallizes in monoclinic space group P1 2 (1) /n1, with a=12.7811(9) ... -
Structural and aromatic aspects for tautomerism of (Z)-6-((4-bromophenylamino)methylene)-2,3-dihydroxycyclohexa-2,4-dienone
Karabiyik, Hasan; Petek, Hande; Iskeleli, Nazan Ocak; Albayrak, Cigdem (Springer/Plenum Publishers, 2009)The molecular and crystal structure of (Z)-6-((4-bromophenylamino)methylene)-2,3-dihydroxycyclohexa- 2,4-dienone were determined by single crystal X-ray diffraction and spectroscopic methods. Molecules of the compound can ... -
Supramolecular architecture of phenylcarbamoylated acetone oxime 1,1-diisopropyl-3-phenylurea] complex
Coskun, Necdet; Parlar, Aydin; Karabiyik, Hasan; Aygun, Muhittin; Büyükgüngör, Orhan (Springer/Plenum Publishers, 2006)Carbamoylated oximes 1 form 1:1 molecular complexes 4 with N,N-dialkyl-N'-phenylurea when stirred in THF or ether at room temperature for short time in good yields. The molecular complexes 4a-e were isolated and characterized ... -
Synthesis and structural characterization of two novel N-heterocyclic carbene complexes of Rh(I)
Karabiyik, Hasan; Kilincarslan, Rafet; Aygun, Muhittin; Cetinkaya, Bekir; Büyükgüngör, Orhan (Taylor & Francis Ltd, 2007)Two new N-heterocyclic carbene (NHC) ligands with p-methylphenyl and p-methoxyphenyl substituents on 4,5-positions and methoxyethyl pendants on N atoms of the imidazole ring were complexed together with cyclooctadiene and ... -
The synthesis, electrochemical properties and structural characterization of bis(N-(4-dimethylaminophenyl)-3,5-di-tert-butylsalicylaldiminato) copper(II)
Kilincarslan, Rafet; Karabiyik, Hasan; Ulusoy, Mahmut; Ayguen, Muhittin; Cetinkaya, Bekir; Büyükgüngör, Orhan (Taylor & Francis Ltd, 2006)A Cu(II) complex of a Schiff base obtained by the condensation of N,N-dimethyl-1,4-phenylenediamine with 3,5-di-tert-butyl-2-hydroxybenzaldehyde has been synthesized and characterized. The structure of the complex was ...