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  • Küçük Resim
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    Crystal structure of 1-[N-(4-Fluorophenyl)]naphthaldimine
    (Japan Soc Analytical Chemistry, 2001) Unver, H; Zengin, DM; Durlu, TN
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    Intramolecular hydrogen bonding and tautomerism in 1-[N-(4-bromophenyl)]aminomethylidene-2(1H) naphthalenone
    (Kluwer Academic/Plenum Publ, 2000) Unver, H; Zengin, DM; Guven, K
    1-[N-(4-bromophenyl)]aminomethylidene-2(1H)naphthalenone (C17H12NOBr) (1) was synthesized and its crystal structure was determined. Compound (1) is monoclinic, space group P2(1)/n with a = 4.808(1) Angstrom, b = 20.617(1) Angstrom, c = 13.750(1) Angstrom, beta = 93.004(1)degrees, = 1361.11(3) Angstrom (3), Z = 4, D-c = 1.592 g.cm(-3), mu (Mo K-alpha) = 3.014 mm(-1), R = 0.051 for 1013 reflections [I > 2 sigma (I)]. There is a strong intramolecular hydrogen bond of distance 2.544(2) Angstrom between the hydroxyl oxygen atom and imine nitrogen atom, the hydrogen atom essentially being bonded to the nitrogen atom, The title molecule is not planar. X-ray crystal structure determination reveals the existence of the keto (or predominantly keto) tautomer in (1). Spectra of compound (1) were observed by IR and NMR, and UV-visible spectra of (1) were studied in different solvents and acidic media.
  • Küçük Resim
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    Synthesis and crystal structure of bis[N-(2-fluoro-3-methoxy)-salicylideneaminato]copper(II)
    (Kluwer Academic/Plenum Publ, 2003) Unver, H; Zengin, DM; Durlu, TN
    The title compound, bis[N-(2-fluoro-3-methoxy)-salicylideneaminato] copper(II) [Cu(C14H12O2FN)(2)] was synthesized and its crystal structure was determined. The title compound is triclinic, space group P (1) over bar with a = 8.552(1), b = 9.645(1), c = 7.871(1) Angstrom, alpha = 108.708(1), beta = 93.769(1), gamma = 79.429(1)degrees, V = 1208.98(1) Angstrom(3), Z = 2, D-c = 1.696 g.cm(-3), mu(Mo Kalpha) = 1.815 mm(-1), R = 0.0369 for 2963 reflections [I > 2sigma(I)]. The title compound has crystallographic inversion symmetry with two bidentate Schiff base ligand coordinated to the Cu atom in a square-planar arrangement. The Cu-N1 and Cu-O2 distances are 1.995(1) and 1.885(1) Angstrom, respectively.