Dizinleme Kaynağı "PubMed" Fizik Mühendisliği Bölümü Makale Koleksiyonu için listeleme

Toplam kayıt 224, listelenen: 41-60

    • (3Ar,4S,7R,7As)-2-Phenyl-4-Propyl-3A,4,7,7A-Tetra­Hydro-1H-4,7-Epithio­Iso­Indole-1,3-Dione 8-Oxide 

      Demircan, Aydın; Şahin, Ertan; Beyazova, G.; Karaaslan, M.; Hökelek, Tuncer (2011)
      In the tetra­hydro­isoindole moiety of the title compound, C17H17NO3S, the six-membered ring assumes a boat configuration and the –S=O group bridges the prow and stern of the boat. The phenyl ring is oriented at a dihedral ...

    • (4,9-Dimethyl-9H-Carbazol-3-Yl)Meth­Anol 

      Öncüoglu, Serkan; Dilek, Nefise; Ergün, Y.; Hökelek, Tuncer (2014)
      In the title compound, C15H15NO, the carbazole skeleton includes a methanol group at the 3-position. The indole ring system is almost planar [maximum deviation = 0.045 (2) Å]. In the crystal, O—H⋯O hydrogen bonds link the ...

    • 4-(Furan-2-Ylmeth­Oxy)Benzene-1,2-Dicarbonitrile 

      Tuncer, Hülya; Görgülü, Ahmet Orhan; Hökelek, Tuncer (2012)
      In the title compound, C13H8N2O2, prepared from furfuryl alcohol and 4-nitro­phthalonitrile in the presence of potassium carbonate in dimethyl­formamide, the furan and benzene rings are oriented at a dihedral angle of ...

    • 4-[2-(2,2-Dimethyl-4,6-Dioxo-1,3-Dioxan-5-Yl­Idene)Hydrazin-1-Yl]Benzo­nitrile 

      Çolak, Naki; Yıldırır, Yılmaz; Tercan, B.; Ermis, E.; Hökelek, Tuncer (2010)
      In the title compound, C13H11N3O4, the dioxane ring adopts an envelope conformation with the C atom bonded to the dimethyl group in the flap position [deviation = 0.613 (1) Å]. The nitrile group and the attached benzene ...

    • 4-Methyl-N-(4-Methyl­Phenyl­Sulfon­Yl)-N-Phenyl­Benzene­Sulfonamide 

      Eren, Bilge; Demir, Selçuk; Dal, Hakan; Hökelek, Tuncer (2014)
      The whole mol­ecule of the title compound, C20H19NO4S2, is generated by twofold rotational symmetry. The N atom is located on the twofold rotation axis and has a trigonal-planar geometry. It is bonded by two S atoms of two ...

    • 4-Meth­Oxy-2-[(E)-(Phenyl­Imino)Meth­Yl]Phenol 

      Uçan, Selma; Öztürk, Aslı; Sarıkavaklı, N.; Hökelek, Tuncer (2008)
      In the mol­ecule of the title compound, C14H13NO2, the two aromatic rings are oriented at a dihedral angle of 0.78 (20)°; with the exception of two methyl H atoms the mol­ecule is essentially planar. The intra­molecular ...

    • 4-{4-[(E)-(2-Hy­droxy­hen­yl)imino­methyl]phen­oxy}Benzene-1,2-Di­carbo­nitrile 

      Görgülü, Ahmet Orhan; Hökelek, Tuncer (2012)
      The asymmetric unit of the title compound, C21H13N3O2, contains two independent mol­ecules with a similar structure. In one mol­ecule, the central benzene ring is oriented with respect to the terminal benzene rings at ...

    • 4-{[4-(Di­methyl­amino)­Benzyildene]amino}­Benzene­sulfonamide 

      Durgun, Mustafa; Türkmen, Hasan; Tunç, H.; Hökelek, Tuncer (2014)
      The title Schiff base compound, C15H17N3O2S, is non-planar with a dihedral angle of 69.88 (4)° between the planes of the benzene rings. In the crystal, pairs of N—H⋯N hydrogen bonds, between the sulfonamide nitro­gen-H ...

    • 4′,4′,6′,6′-Tetra­chloro-2-(6-methyl­pyridin-2-yl)-1H,2H-spiro­[naphtho­[1,2-E][1,3,2]oxaza­phosphinine-3,2′-[1,3,5,2,4,6]Tri­aza­triphosphinine] 

      Işıklan, Muhammet; Sonkaya, Ömer; Hökelek, Tuncer (2013)
      The title compound, C17H14Cl4N5OP3, is a spiro-phosphazene derivative with bulky naphthalene and pyridine rings. The phosphazene and the six-membered N/O rings are in flattened-boat and twisted-boat conformations, respectively. ...

    • 5,6-Diphenyl­pyrazine-2,3-Dicarbonitrile 

      Hökelek, Tuncer; Yalçın, Ergin; Seferoğlu, Z.; Şahin, Ertan (2009)
      In the title compound, C18H10N4, the pyrazine ring is oriented at dihedral angles of 48.08 (7) and 44.80 (7)° with respect to the phenyl rings, while the dihedral angle between the phenyl rings is 49.47 (7)°. In the crystal ...

    • 5-(3,6-Dibromo-9H-carbazol-9-yl)penta­nenitrile 

      Uludağ, Nesimi; Ateş, Murat; Tercan, Barış; Hökelek, Tuncer (2011)
      In the title compound, C17H14Br2N2, the carbazole skeleton is nearly planar [maximum deviation = 0.055 (2) Å]. In the crystal, aromatic π–π stacking is observed between parallel carbazole ring systems of adjacent mol­ecules, ...

    • 9-(4-Nitro­Phenyl­Sulfon­Yl)-9H-Carbazole 

      Uludağ, Nesimi; Ateş, Murat; Tercan, Barış; Hökelek, Tuncer (2011)
      In the title mol­ecule, C18H12N2O4S, the carbazole skeleton is nearly planar [maximum deviation = 0.037 (1) Å] and is oriented at a dihedral angle of 73.73 (5)° with respect to the benzene ring. An intra­molecular C—H⋯O ...

    • 9-Benzyl-9H-Carbazole 

      Uludağ, Nesimi; Ateş, Murat; Tercan, Barış; Ermis, Emel; Hökelek, Tuncer (2010)
      The asymmetric unit of the title compound, C19H15N, contains two crystallographically independent mol­ecules. In both mol­ecules, the planar carbazole moieties [maximum deviations = 0.037 (4) and 0.042 (3) Å] are oriented ...

    • 9H-Carbazole-9-Carbo­thioic Di­thio­peroxy­anhydride 

      Uludağ, Nesimi; Ateş, Murat; Delibaş, N. Çaylak; Çelik, Ömer; Hökelek, Tuncer (2013)
      The whole mol­ecule of the title compound, C26H16N2S4, is generated by twofold rotational symmetry. The carbazole skeleton is nearly planar [maximum deviation = 0.054 (5) Å]. In the crystal, aromatic π–π stacking is observed ...

    • A Nanocomposite Shield Constructed For Protection Against The Harmful Effects Of Dental X-Rays 

      Ayyıldız,Simel; Soylu,Elif Hilal; Özen,Jülide; İde,Semra; Kamburoğlu ,Kıvanç; Krammer, N. (2015)
      Objectives: This study aimed to compare a number of new nano-composites capable of protecting the jaw from ionizing radiation. Materials and Methods: Four different types of nano-powders [Ti, Zr (IV) oxide, Ag and Co] were ...

    • An Electron Paramagnetic Resonance (Epr) Spin Labeling Study In Ht-29 Colon Adenocarcinoma Cells After Hypericin-Mediated Photodynamic Therapy 

      Yonar, D.; Kılıç Süloğlu, A.; Selmanoğlu, G.; Sünnetçioğlu, M. M. (2019)
      Background Colon cancer affects 1.23 million people worldwide and is the third most common malignant disease in men and the second in women. The only curative treatment is surgical resection, but a significant number of ...

    • Annealing of Co-Cr Dental Alloy: Effects on Nanostructure and Rockwell Hardness 

      Ayyıldız, Simel; Soylu, Elif Hilal; İde, Semra; Kılıç, Selim; Sipahi, Cumhur; Pişkin, Bülent; Gökçe, Hasan Suat (2013)
      PURPOSE The aim of the study was to evaluate the effect of annealing on the nanostructure and hardness of Co-Cr metal ceramic samples that were fabricated with a direct metal laser sintering (DMLS) technique. MATERIALS AND ...

    • Aqua­Bis(4-Formyl­Benzoato-Κ2 O 1,O 1′)Bis­(Isonicotinamide-Κn 1)Cadmium(Ii) Monohydrate 

      Hökelek, Tuncer; Yılmaz, Filiz; Tercan, B.; Gürgen, F.; Necefoğlu, Hacali (2009)
      The asymmetric unit of the title CdII complex, [Cd(C8H5O3)2(C6H6N2O)2(H2O)]·H2O, contains two 4-formyl­benzoate (FB), two isonicotinamide (INA) ligands, one coordinated and one uncoordinated water mol­ecule; the FB ions ...

    • Aqua­Bis(Isonicotinamide-Κn1)Bis­(4-Methyl­Benzoato)-Κo;Κ2 O,O′-Cadmium(II) Monohydrate 

      Necefoglu, H.; Çimen, E; Tercan, B.; Süzen, Y.; Hökelek.T (2010)
      In the crystal structure of the title compound, [Cd(C8H7O2)2(C6H6N2O)2(H2O)]·H2O, the CdII cation is coordinated by two 4-methyl­benzoate (PMB) anions, two isonicotinamide (INA) ligands and one water mol­ecule in a distorted ...

    • Aqua­bis­(3-Chloro­Benzoato-kO)Bis­(N,N-Di­Ethyl­Nicotinamide-kN)Copper(II) 

      Bozkurt, Nihat; Tunç, Tuncay; Delibaş, N. Çaylak; Necefoğlu, Hacali; Hökelek, Tuncer (2013)
      The title compound, [Cu(C7H4ClO2)2(C10H14N2O)2(H2O)], has twofold symmetry with the CuII cation and the O atom of the coordinating water mol­ecule located on the axis. The CuII cation is coordinated by two carboxyl­ate O ...