Başlık için Fizik Mühendisliği Bölümü Makale Koleksiyonu listeleme

Toplam kayıt 723, listelenen: 43-62

    • 3,3′-Dimethyl-4,4′-(Hexane-1,6-Di­Yl)Bis­[1H-1,2,4-Triazol-5(4H)-One] 

      Ustabaş, Reşat; Çoruh, Ufuk; Ünlüer, D.; Hökelek, Tuncer; Ermiş, Emel (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⋯O hydrogen bonds and ...

    • 3,9-Dimethyl-2,3-Dihydro­Spiro­[Carb­Az­Ole-1,2′-[1,3]Dithio­Lan]-4(9H)-One 

      Gülle, Sibel; Delibaş, Nagihan Çaylak; Ergün, Y.; Hökelek, Tuncer; Hrubec, J. (2013)
      The title compound, C16H17NOS2, consists of a carbazole skeleton with methyl and dithiol­ane groups as substituents. In the indole ring system, the benzene and pyrrole rings are nearly coplanar, forming a dihedral angle ...

    • 3-Phenyl­Diazen­Yl-1,2-Dimethyl-1H-Indole 

      Hökelek, Tuncer; Biçer, Nusret Tuna; Seferoğlu, Zeynel; Şahin, Ertan (2010)
      In the title mol­ecule, C16H15N3, the indole ring system is planar within 0.021 (3) Å and the phenyl ring is inclined to this plane by 17.32 (14)°. π–π contacts involving the pyrrole rings of inversion-related indole units ...

    • (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-(4-Methoxybenzoyl)-5-(4-Methoxyphenyl)-2,3-Dihydro-2,3-Furandione 

      Hökelek, Tuncer; Saripinar,E.; Yildirim, I.; Akkurt , M.; Akçamur , Y. (Blackwell Munksgaard, 2002)
      The title compound, C19H14O6, is a derivative of 2,3-dioxo-2,3-dihydrofuran. The furan ring is essentially planar and the phenyl rings in the methoxyphenyl and methoxybenzoyl groups are not parallel to each other. The furan ...

    • 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-Diphenylthieno[2, 3-D][1, 3]-Dithiole-2-Thione 

      Kaynak,F. Betül; Özbey, Süheyla; Öztürk , Turan; Ertas ,Erdal (2001)

    • 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, ...

    • 5-Benzyl-5-Phenyl[1,3]Dithiolo[4,5-D]-[1,3]Dithiole-2-Thione 

      Kaynak, F. Betül; Özbey, Süheyla; Öztürk, Turan; Ertaş, Erdal (Munksgaard Int Publ Ltd, 2001)
      In the title compound, C17H12S5, the dithiole ring bearing the aryl substituents assumes an envelope conformation with the maximum deviation from planarity being -0.053 Angstrom. The phenyl and benzyl rings are twisted by ...

    • 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 ...