Yazar "Ustabas, Resat" için listeleme
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1,2,4-triazole derivative with Schiff base; thiol-thione tautomerism, DFT study and antileishmanial activity
Suleymanoglu, Nevin; Ustabas, Resat; Direkel, Sahin; Alpaslan, Yelda Bingol; Unver, Yasemin (Elsevier, 2017)Thiol-thione tautomerism of 1,2,4-triazole derivative with Schiff base was investigated by spectro-scopic methods and quantum mechanical calculations. Theoretical study of thiol-thione tautomeric forms of 1,2,4-triazole ... -
1,2,4-triazole derivatives with morpholine; DFT study and antileishmanial activity
Suleymanoglu, Nevin; Ustabas, Resat; Direkel, Sahin; Alpaslan, Yelda Bingol; Unver, Yasemin (Canadian Science Publishing, Nrc Research Press, 2018)1,2,4-triazole derivatives with morpholine; 4-((3-methylthiophene-2-yl) methylenamino)-1-((4-(3-methylthiophene-2-yl) methylene amino)-1-(morpholinomethyl)-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-yl) methyl)-3-(thiophen ... -
1-(Acetonyl)-3-(2-thienylmethyl)-4-(4H-1,2,4-triazol-4-yl)-1H-1,2,4-triazol-5(4H)-one
Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Demirkan, Esra; Vazquez-Lopez, Ezequiel M. (Int Union Crystallography, 2007)… -
1-(benzoylmethyl)-4-[(2,4-dichlorobenzylidene)amino]-3-(2-thienylmethyl)4,5-dihydro-1H-1,2,4-triazol-5-one
Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Uenver, Yasemin; Vazquez-Lopez, Ezequiel M. (Int Union Crystallography, 2007)The thiophene ring of the title compound, C22H16Cl2N4O2S, is disordered over two positions, corresponding to rotation of approximately 180 degrees about the single C-C bond, with occupancies approximately in a 4:1 ratio. ... -
1-acetonyl-4-(2,5-dimethyl-4H-1,2,4-triazol-4-yl)-3-(2-thienylmethyl)-1H-1,2,4-triazol-5(4H)-one
Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Demirkan, Esra (Wiley-Blackwell, 2007)The thiophene ring of the title compound, C14H16N6O2S, is disordered over two positions, with a site-occupancy ratio of approximately 5:4, corresponding to rotation of approximately 180 degrees about the single C-C bond. ... -
1-acetonyl-4-(3,5-diethyl-4H-1,2,4-triazol-4-yl)-3-(2-thienylmethyl)-1H-1,2,4-triazol-5(4H)-one
Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Dugdu, Esra; Vazquez-Lopez, Ezequiel M. (Int Union Crystallography, 2006)The title compound, C16H20N6O2S, has two similar independent molecules in the asymmetric unit, with planar triazole and thiophene rings. Intermolecular C-H center dot center dot center dot N and C-H center dot center dot ... -
(1RS,2SR,6SR,7SR)-4,10-dioxatricyclo[5.2.1.0(2,6)]dec-8-en-3-one
Ustabas, Resat; Salamci, Emine; Coruh, Ufuk; Vazquez-Lopez, Ezequiel M.; Yavuz, Metin (Int Union Crystallography, 2006)The asymmetric unit of the title compound, C8H8O3, contains two molecules. Each molecule involves one planar and two non-planar five-membered rings. -
2,2 '-[2,3-bis(1-formyl-2-naphthyloxymethyl)-but-2-ene-1,4-diyldioxy]bis(naphthalene-1-carbaldehyde)
Ustabas, Resat; Coruh, Ufuk; Er, Mustafa; Serbest, Kerim; Vazquez-Lopez, Ezequiel M. (Blackwell Publishing, 2006)The molecule of the title compound, C50H36O8, lies on an inversion centre. Intermolecular C-H center dot center dot center dot O hydrogen bonds result in the formation of an intricate three-dimensional network. -
2-Benzoylmethyl-4-[(2-benzylideneethylidene)amino]-5-(2-thienylmethyl)-2H-1,2,4-triazol-3(4H)-one
Ustabas, Resat; Uenver, Yasemin; Suleymanoglu, Nevin; Coruh, Ufuk; Sancak, Kemal (Int Union Crystallography, 2009)In the molecule of the title compound, C24H20N4O2S, the dihedral angle between the triazole and thiophene rings is 66.80 (4)degrees and the dihedral angle between the two benzene rings is 63.37 (4)degrees. An intramolecular ... -
2-Propylamino-5-[4-(2-hydroxy-3,5-dichlorobenzylideneamino) phenyl]-1,3,4-thiadiazole: X-ray and DFT-calculated structures
Suleymanoglu, Nevin; Ustabas, Resat; Alpaslan, Yelda Bingoel; Coruh, Ufuk; Karakus, Sevgi; Rollas, Sevim (Springer/Plenum Publishers, 2010)2-Propylamino-5-[4-(2-hydroxy-3,5-dichlorobenzylideneamino) phenyl]-1,3,4-thiadiazole, formulated as C18H16Cl2N4OS (I), was synthesized. The crystal and molecular structure of (I) have been determined by H-1-NMR, IR, and ... -
3,3 '-Bis(2-thienylmethyl)-4,4 '-(butane-1,4-diyl)bis(4,5-dihydro-1H-1,2,4-triazol-5-one)
Unver, Yasemin; Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Vazquez-Lopez, Ezequiel M. (Int Union Crystallography, 2006)The title compound, C18H20N6O2S2, has a centre of symmetry. The thiophene ring makes an angle of 70.58 (6)degrees with the triazole ring. Molecules are linked via N-(HO)-O-... hydrogen bonds, forming a three-dimensional network. -
3,3 '-Dimethyl-4,4 '-(hexane-1,6-diyl)bis[1H-1,2,4-triazol-5(4H)-one]
Ustabas, Resat; Coruh, Ufuk; Unluer, Dilek; Hokelek, Tuncer; Ermis, Emel (Int Union Crystallography, 2010)The title compound, C12H20N6O2, has a centre of symmetry. The molecule consists of two triazole rings joined by an aliphatic -(CH2)(6)- chain. The crystal structure is stabilized by intermolecular N-H center dot center dot ... -
4-[(5-Nitrothiophen-2-ylmethylene)amino]5-(thiophen-2-ylmethyl)-1H-1,2,4-triazol-5(4H)-one
Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Unver, Yasemin; Vazques-Lopez, Ezequiel M. (Int Union Crystallography, 2006)The title compound, C12H9N5O3S2, contains three planar rings. The triazole ring makes a dihedral angle of 3.88 (15)degrees with the nitrothiophene ring. Intra- and intermolecular hydrogen bonding is effective in stabilizing ... -
4-[3-(1H-Imidazol-1-yl)propyl]-3-phenyl-1H-1,2,4-triazol-5(4H)-one
Kalkan, Hueseyin; Ustabas, Resat; Sancak, Kemal; Uenver, Yasemin; Vazquez-Lopez, Ezequiel M. (Blackwell Publishing, 2007)The title compound, C14H15N5O, has two similar independent molecules in the asymmetric unit. The crystal structure is stabilized by C-H center dot center dot center dot O, C-H center dot center dot center dot N and N-H ... -
5-(4-Bromobenzyl)-4-(4-(5-phenyl-1,3,4-oxadiazole-2-yl)phenyl)-2,4-dihydro-3H-1,2,4-triazole-3-one: Synthesis, characterization, DFT study and antimicrobial activity
Ustabas, Resat; Suleymanoglu, Nevin; Unver, Yasemin; Direkel, Sahin (Elsevier, 2020)Since molecules containing 1,3,4-oxadiazoles and 1,2,4-triazole heterocyclic rings in their structures have important biological activities; 5-(4-Bromobenzyl)-4-(4-(5-phenyl-1,3,4-oxadiazole-2-yl)phenyl)-2,4-dihydro-3H-1 ... -
Antileishmanial activity study and theoretical calculations for 4-amino-1,2,4-triazole derivatives
Suleymanoglu, Nevin; Unver, Yasemin; Ustabas, Resat; Direkel, Sahin; Alpaslan, Gokhan (Elsevier Science Bv, 2017)4-amino-1,2,4-triazole derivatives; 4-amino-1-((5-mercapto-1,3,4-oxadiazole-2-yl)methyl)-3-(thiophene-2-ylmethyl)-1H-1,2,4-triazole-5(4H)-one (1) and 4 -amino-1-((4-amino-5 mercapto-4H-1,2,4triazole-3-yl)rnethyl)-3-(thio ... -
Crystal Structure 4-(2,4-Dihydroxybenzylideneamino)-5-methyl-2H-1,2,4-triazol-3(4H)-one
Ustabas, Resat; Unluer, Dilek; Kor, Gulcan (Springer/Plenum Publishers, 2011)The title compound (I), 4-(2,4-dihydroxybenzlideneamino)-5-methyl-2H-1,2,4-triazol-3(4H)-one was characterized by single crystal X-ray diffraction. This crystal is monoclinic, space group P2(1)/c with a = 10.1447(7) , b = ... -
Cyclooctane-1,2,5,6-tetrayl tetraacetate
Salamci, Emine; Ustabas, Resat; Coruh, Ufuk; Yavuz, Metin; Vazquez-Lopez, Ezequiel M. (Int Union Crystallography, 2006)In the title compound, C16H24O8, the cyclo-octane ring has a non-planar structure. Weak intermolecular C-H center dot center dot center dot O hydrogen bonding occurs in the crystal structure. -
(E)-4,4 '-(but-2-ene-1,4-diyldioxy)bis(3methoxybenzaldehyde)
Ustabas, Resat; Coruh, Ufuk; Sancak, Kemal; Er, Mustafa; Vazquez-Lopez, Ezequiel M. (Int Union Crystallography, 2007)… -
Experimental (C-13 NMR, H-1 NMR, FT-IR, single-crystal X-ray diffraction) and DFT studies on 3,4-bis(isoproylamino)cyclobut-3-ene-1,2-dione
Suleymanoglu, Nevin; Ustabas, Resat; Alpaslan, Yelda Bingol; Eyduran, Fatih; Ozyurek, Cengiz; Iskeleli, Nazan Ocak (Pergamon-Elsevier Science Ltd, 2011)In this work, 3,4-bis(isoproylamino)cyclobut-3-ene-1,2-dione C10H16N2O2 (I), was synthesized and characterized by C-13 NMR, H-1 NMR, FT-IR. UV-vis spectroscopy and single-crystal X-ray diffraction. DFT method with 6-31G(d,p) ...
