Yazar "Ulusoy, Mahmut" seçeneğine göre listele

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    1-(2,3,4,5,6-Pentamethylbenzyl)-2-(pyridin-2-yl)-1H-benzimidazole
    (Int Union Crystallography, 2014) Angay, Firat; Celik, Omer; Barlik, Orhan; Ulusoy, Mahmut
    In the title compound, C24H25N3, the benzimidazole ring system is essentially planar, with an r.m.s. deviation of 0.017 angstrom, and forms dihedral angles of 7.81 (5) and 87.61 (4)degrees with the pyridine and benzene rings, respectively. An intramolecular C-H center dot center dot center dot N hydrogen bond is observed. In the crystal, molecules are stacked along the a axis by weak C-H center dot center dot center dot pi interactions.
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    1-(4-Fluorobenzyl)-2-(pyridin-2-yl)-1H-benzimidazole
    (International Union of Crystallography, 2014) Çelik, Ömer; Gündoğan, Mustafa; Anğay, Fırat; Ulusoy, Mahmut
    In the title compound, C19H14FN3, the dihedral angles between the benzimidazole unit (r.m.s. deviation= 0.017 A˚ ) and the pyridine and benzene rings are 24.46 (4) and 81.87 (3), respectively. In the crystal, molecules are stacked along the a-axis direction by C—H interactions.
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    Chemical fixation of CO2 into cyclic carbonates by azo-containing Schiff base metal complexes
    (Royal Soc Chemistry, 2015) Ikiz, Mesut; Ispir, Esin; Aytar, Emine; Ulusoy, Mahmut; Karabuga, Semistan; Aslantas, Mehmet; Celikd, Omer
    Two new ligands containing a -NQN- group, 4-((E)-(4-bromophenyl) diazenyl)-2-((E)-(phenylimino)-methyl)phenol ((LH)-H-1, 2), 4-((E)-(4-bromophenyl)diazenyl)-2-((E)-((4-ethylphenyl)imino)methyl)phenol ((LH)-H-2, 3) and their metal complexes were synthesized. The synthesized metal complexes were used as catalysts for the chemical fixation of CO2 into cyclic carbonates using epoxides which were used as both substrate and solvent. According to analytical, UV-visible and IR data, the metal complexes are formed by coordination of the N and O atoms of the ligands and the metal : ligand ratio was found to be 1:2 for all the complexes. The TG and DTA results showed that these complexes had good thermal stability. The molecular structures of ligand 2 ((LH)-H-1) and its Zn-II complex 4 (Zn(L-1)(2)) were determined by single crystal X-ray diffraction studies. After choosing the most active catalyst (Zn(L-1)(2), 4), optimization studies were performed by changing various parameters. Ionic liquids have been found to have a positive effect and showed the most active performance with (bmim) PF6+ Zn(L-1)(2) (4) as a binary catalytic system.
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    Öğe
    Chemical fixation of CO2 into cyclic carbonates by azo-containing Schiff base metal complexes (vol 39, pg 7786, 2015)
    (Royal Soc Chemistry, 2015) Ikiz, Mesut; Ispir, Esin; Aytar, Emine; Ulusoy, Mahmut; Karabuga, Semistan; Aslantas, Mehmet; Celik, Omer
    [Abstract Not Available]