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    Dipotassium maleate with boric acid
    (Blackwell Publishing, 2007) Tombul, Mustafa; Güven, Kutalmış; Büyükgüngör, Orhan; Aktaş, Huseyin; Durlu, Tahsin Nuri
    In the title compound, poly[(mu(3)-boric acid)-mu(4)-maleato-dipotassium], [K-2(C4H2O4){B(OH)(3)}](n), there are two independent K+ cations, one bonded to seven O atoms ( three from boric acid and four from maleate), and the other eight-coordinate via three boric acid and four maleate O atoms and a weak eta(1)-type coordination to the C = C bond of the maleate central C atoms. Hydrogen bonding links the boric acid ligands and maleate dianions, completing the packing structure.
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    The magnetic properties of martensitic phase in Fe-Ni-Mn alloys: AC magnetic susceptibility observations
    (Springer, 2005) Aktürk, Selçuk; Durlu, Tahsin Nuri
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    The magnetic properties of martensitic phase in Fe-Ni-Mn alloys: Mossbauer spectroscopy observation
    (Springer, 2005) Aktürk, S.; Durlu, Tahsin Nuri
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    New observations on the formation of athermal martensite in Fe-Ni-Mo alloys
    (Elsevier Science Sa, 2007) Yasar, Eyüp; Güngüneş, Hakan; Aktürk, S.; Durlu, Tahsin Nuri
    The thermally induced gamma-epsilon and gamma-alpha' martensitic transformation in Fe-30%Ni-x%Mo alloys with different Mo contents have been studied by transmission electron microscopy (TEM). Observations reveal that alpha' martensite is found in alloys containing 0.8, 1.8, and 2.6% Mo, and 8 martensite in the alloy containing 5%Mo. The first three display the Kurdjumov-Sachs (K-S) orientation relationship between gamma and alpha', while the other displays the Shoji-Nishiyama (S-N) orientation relationship between gamma and epsilon. (c) 2006 Elsevier B.V. All rights reserved.
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    Spectroscopic studies, antimicrobial activities and crystal structures of N-(2-hydroxy-3-methoxybenzalidene) 1-aminonaphthalene
    (Elsevier Science Bv, 2005) Ünver, Hüseyin; Yıldız, Mustafa; Dülger, Başaran; Özgen, Özen; Kendi, Engin; Durlu, Tahsin Nuri
    Schiff base N-(2-hydroxy-3-methoxybenzalidene)1-aminonaphthalene has been synthesized from the reaction of 2-hydroxy-3-methoxybenzaldehyde with 1-aminonaphthalene. The compound were characterized by elemental analysis, FT-IR, H-1 NMR, C-13 NMR and UV-visible techniques. The UV-visible spectra of the Schiff base were studied in polar and nonpolar solvents in acidic and basic media. The structure of the compound has been examined cyrstallographically. There are two independent molecules in the asymmetric unit. It crystallizes in the monoclinic space group P2(l)/c, with unit cell parameters: a=14,602(2), b=5,800(1), c= 16,899(1) Angstrom, V= 1394.4(2) Angstrom(3) D-x=1.321 g cm(-3) and Z = 4. The crystal structure was solved by direct methods and refined by full-matrix least squares to a find R = 0.041 of for 1179 observed reflections. The title compound's antimicrobial activities also have been studied. The antimicrobial activities of the ligand has been screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538, Klebsiella pneumoniae UC57, Micrococcus luteus La 2971, Proteus vulgaris ATCC 8427, Pseudomonas aeruginosa ATCC 27853, Mycobacterium smegmatis CCM 2067, Bacillus cereus ATCC 7064 and Listeria monocytogenes ATCC 15313, the yeast cultures Candida albicans ATCC 1023 1, Kluyveromyces fragilis NRRL 2415, Rhodotorula rubra DSM 70403, Debaryomyces hansenii DSM 70238 and Hanseniaspora guilliemodii DSM 3432. (C) 2004 Elsevier B.V. All rights reserved.
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    Spectroscopic studies, antimicrobial activities, and crystal structure of N-[2-hydroxy-1-naphthylidene]3, 5-bis(trifluoromethyl)aniline
    (Springer/Plenum Publishers, 2006) Ünver, Hüseyin; Yıldız, Mustafa; Kiraz, Askın; İskeleli, Nazan Ocak; Erdönmez, Ahmet; Dülger, Başaran; Durlu, Tahsin Nuri
    A new Schiff base compound has been synthesized by the reaction of 2-hydroxy-1-naphthaldehyde with 3,5-bis(trifluoromethyl)aniline.The title compound was characterized by elemental analysis, IR, H-1 NMR, C-13 NMR, and UV-Visible techniques.Its UV-Vis spectra was examined in polar and nonpolar solvents and in acidic and basic media. The crystal structure of the compound showed the OH group to be ortho to the imine group. It crystallizes in the monoclinic space group P2(1) with a = 11.328(2), b = 6.125(1), c = 11.937(2) angstrom, V = 825.1(2) angstrom(3), D (x) = 1.543 g cm(-3) and Z = 2. An intramolecular O1- H center dot center dot center dot N1 [2.558(7) angstrom] hydrogen bond stabilizes the molecule. The compound has also been characterized by its antimicrobial activities. The ligand has been screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538, Klebsiella pneumoniae UC57, Micrococcus luteus La 2971, Proteus vulgaris ATCC 8427, Pseudomonas aeruginosa ATCC 27853, Mycobacterium smegmatis CCM 2067, Bacillus cereus ATCC 7064, and Listeria monocytogenes ATCC 15313, the yeast cultures Candida albicans ATCC 10231, Kluyveromyces fragilis NRRL 2415, Rhodotorula rubra DSM 70403, Debaryomyces hansenii DSM 70238, and Hanseniaspora guilliermondii DSM 3432.
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    Spectroscopic study, antimicrobial activity and crystal structures of N-(2-hydroxy-5-nitrobenzalidene)4-aminomorpholine and N-(2-hydroxy-1-naphthylidene)4-aminomorpholine
    (Elsevier, 2005) Yıldız, Mustafa; Ünver, Hüseyin; Dülger, Başaran; Erdener, Diğdem; Ocak, Nazan; Erdönmez, Ahmet; Durlu, Tahsin Nuri
    Schiff bases N-(2-hydroxy-3-nitrobenzalidene)4-aminomorpholine (1) and N-(2-hydroxy- I -naphthylidene)4-aminomorpholine (2) were synthesized from the reaction of 4-aminomorpholine with 2-hydroxy-5-nitrobenzaldehyde and 2-hydroxy- 1 -naphthaldehyde. Compounds 1 and 2 were characterized by elemental analysis, IR, H-1 NMR, C-13 NMR and UV-Visible techniques. The UV-Visible spectra of the Schiff bases with OH group in ortho position to the imino group were studied in polar and nonpolar solvents in acidic and basic media. The structures of compounds 1 and 2 have been examined cyrstallographically, for two compounds exist as dominant form of enol-imines in both the solutions and solid state. The title compounds 1 and 2 crystallize in the monoclinic space group P2(1)/c and P2(1)/n with unit cell parameters: a=8.410(1) and 11.911(3), b=6.350(9) and 4.860(9), c=21.728(3) and 22.381(6) angstrom, beta=90.190(1) and 95.6(2)degrees, V=1160.6(3) and 1289.5(5) angstrom(3), D-x = 1.438 and 1.320 g cm(-3), respectively. The crystal structures were solved by direct methods and refined by full-matrix least squares. The antimicrobial activities of compounds 1 and 2 have also been studied. The antimicrobial activities of the ligands have been screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538, Klebsiella pneumoniae UC57, Micrococcus luteus La 297 1, Proteus vulgaris ATCC 8427, Pseudomonas aeruginosa ATCC 27853, Mycobacterium smegmatis CCM 2067, Bacillus cereus ATCC 7064, Listeria monocytogenes ATCC 15313, Candida albicans ATCC 1023 1, Kluyveromyces fragilis NRRL 2415, Rhodotorula rubra DSM 70403, Debaryomyces hansenii DSM 70238 and Hanseniaspora guilliennondii DSM 3432. 0 2004 Elsevier B.V. All rights reserved.
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    Tautomeric properties and crystal structure of N-[2-hydroxy-1-naphthylidene]2,5-dichloroaniline
    (Wiley-V C H Verlag Gmbh, 2006) Yıldız, Mustafa; Ünver, Hüseyin; Erdener, Diğdem; Ocak, Nazan; Erdönmez, Ahmet; Durlu, Tahsin Nuri
    The title compound has been synthesised by the reaction of 2-hydroxy-1-naphthaldehyde with 2,5-dichloroaniline. The compound was characterized by elemental analysis, IR and UV-Visible techniques. The UV-Visible spectra of the Schiff base with OH group in ortho position to the imino group was studied in polar and nonpolar solvents in acidic and basic media. The structure of compound has been examined cyrstallographically. It crystallizes in the or-thorhombic space group P2(1)2(1)2(1) with a = 6.059(1), b = 12.105(2) c = 20.006(2) angstrom, V = 1467.4(3) angstrom(3), D-x = 1.431 g.cm(-3) and Z = 4. The crystal structure was solved by direct methods and refined by full-matrix least squares. Molecule of the title compound N-[2-hydroxy-1-naphthylidene]2,5-dichloroaniline is nearly planar. The molecule contains a strong intramolecular N...H-O hydrogen bond between the imine and hydroxyl group [O1 and N1 = 2.540(4) angstrom]. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.