Ağar Erbil

Ondokuz Mayıs Üniversitesi, Djanik, Samsun, Turkey

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Publications (11)3.82 Total impact

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    ABSTRACT: The molecule of the title compound, C23H17NO2, a Schiff base derived from 2-hydroxy-1-naphthaldehyde, crystallizes in the keto–amine tautomeric form. The dihedral angle between the aniline and hydroxybenzene rings is 77.41 (17)°, whereas the planes of the naphthaldehyde and fused aniline benzene rings are nearly coplanar, making a dihedral angle of 8.29 (15)°. Intramolecular N—H...O hydrogen bonding, a characteristic hydrogen bond for Schiff bases, helps to stabilize the molecular structure. Weak intermolecular C—H...π interactions are present in the crystal structure.
    Acta Crystallographica Section E Structure Reports Online 01/2010; · 0.35 Impact Factor
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    ABSTRACT: There are two independent molecules in the asymmetric unit of the title compound, C15H14BrNO3, with very similar geometrical parameters. Each molecule adopts the phenol–imine tautomeric form, with strong intramolecular O—H...N hydrogen bonds. The two molecules are non-planar, the dihedral angles between the two aromatic rings being are 24.6 (2) and 30.30 (13)°.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: X-ray analysis reveals that the title Schiff base compound, C17H19NO3, possesses both OH and NH tautomeric character in its molecular structure. The occupancies of the enol and keto tautomers are 0.62 (3) and 0.38 (3), respectively. The presence of the minor keto form could not be confirmed from the IR spectrum. The molecule is approximately planar, the dihedral angle between the planes of the two aromatic rings being 6.97 (8)°. The molecular structure of the major component is stabilized by an intramolecular O—H...N hydrogen bond, which generates an S(6) ring motif (N—H...O hydrogen bond in the minor component).
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: The molecule of the title compound, C13H17N3O4, exists as a zwitterion, with the H atom of the phenol group being transferred to the imine N atom. The C=O, CAr—CAr and C—N bond lengths are in agreement with the oxocyclohexadienide–iminium zwitterionic form. A strong intramolecular N+—H...O hydrogen bond generates an S(6) ring motif. The morpholine ring adopts a chair conformation. In the crystal, molecules are linked into centrosymmetric dimers by intermolecular N—H...O hydrogen bonds. In addition, C—H...O hydrogen bonds and very weak C—H...π interactions are observed.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: The title compound, C13H10ClNO2, exists in the phenol–imine form in the crystal, and the aromatic rings are oriented at a dihedral angle of 2.82 (9)°. An intramolecular O—H...N hydrogen bond results in the formation of a planar six-membered ring. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules into chains.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: The title compound, C16H17NO, is a Schiff base which adopts the phenol–imine tautomeric form in the solid state. The molecule is almost planar, with a dihedral angle of 4.61 (4)° between the aromatic rings. The molecular structure is stabilized by an intramolecular O—H...N hydrogen bond which generates a six membered ring.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: The title Schiff base compound, C14H12N2O4, is in an intermediate state between NH and OH tautomers. Apart from the intramolecular O—H...N hydrogen bond, there are intermolecular C—H...O hydrogen bonds, generating centrosymmetric R22(18) and R22(14) dimers.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: The title compound, C15H11Cl2NO2, is a Schiff base which adopts the phenol–imine tautomeric form in the solid state, being stabilized by a strong intramolecular O—H...N hydrogen bond. The molecule is almost planar (r.m.s. deviation for all non-H atoms = 0.049 Å), displaying a dihedral angle of 3.1 (3)° between the planes of the two aromatic rings.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
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    ABSTRACT: The molecule of the title compound, C14H12ClNO, adopts the enol–imine tautomeric form, with an intramolecular O—H...N hydrogen bond. In the molecule, the two benzene rings are twisted with respect to each other by 30.6 (2)°. The crystal structure is stabilized by intermolecular C—H...π interactions.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor
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    ABSTRACT: The title compound, C20H16N2O2, displays a trans configuration with respect to the N=N double bond. The aromatic rings bridged by the azo group are nearly coplanar, forming a dihedral angle of 6.83 (8)°. A strong intra­molecular O—H⋯O hydrogen bond is observed. In the three-dimensional network, the mol­ecules are linked by weak van der Waals inter­actions.
    Acta Crystallographica Section E Structure Reports Online 03/2006; 62(3). · 0.35 Impact Factor
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    ABSTRACT: The title compound, C17H9N3O, cyrstallizes with two mol­ecules in the asymmetric unit. Both independent mol­ecules have essentially the same geometry. The angles between the planes of the quinoline group and the phenyl ring of the phthalo­nitrile group in the two mol­ecules are 84.36 (4) and 83.69 (4)°.
    Acta Crystallographica Section E Structure Reports Online 09/2003; 59(9). · 0.35 Impact Factor