• 2-(1H-Benzimidazol-1-Yl)-1-(2-Fur­Yl)Ethanone O-Ethyl­Oxime 

      Güven, Özden Özel; Erdogan, Taner; Tahir, M. N.; Hökelek, Tuncer (2009)
      In the mol­ecule of the title compound, C15H15N3O2, the planar benzimidazole ring system [maximum deviation = 0.023 (2) Å] is oriented at a dihedral angle of 74.21 (5)° with respect to the furan ring. In the crystal ...
    • 2-(1H-Benzimidazol-1-Yl)-1-(2-Fur­Yl)Ethanone O-Isopropyl­Oxime 

      Güven, Özden Özel; Erdoğan, Taner; Coles, S. J.; Hökelek, Tuncer (2009)
      In the mol­ecule of the title compound, C16H17N3O2, the planar benzimidazole ring system [maximum deviation = 0.015 (2) Å] is oriented at a dihedral angle of 72.17 (4)° with respect to the furan ring. An intra­molecular ...
    • 2-(1H-Benzimidazol-1-Yl)-1-Phenyl­Ethanone 

      Güven, Özden Özel; Erdoğan, Taner; Coles, S. J.; Hökelek, Tuncer (2008)
      In the mol­ecule of the title compound, C15H12N2O, the planar benzimidazole system is oriented at a dihedral angle of 80.43 (5)° with respect to the phenyl ring. In the crystal structure, non-classical inter­molecular C—H⋯N ...
    • 2-(1H-Benzotriazol-1-Yl)-1-(Furan-2-Yl)Ethanol 

      Güven, Özden Özel; Bayraktar, Meral; J. Coles, Simon; Hökelek,Tuncer (2011)
      In the title compound, C12H11N3O2, the benzotriazole ring system is approximately planar [maximum deviation = 0.008 (1) Å] and its mean plane is oriented at a dihedral angle of 24.05 (4)° with respect to the furan ring. ...
    • 2-(1H-Benzotriazol-1-Yl)-1-Phenyl­Ethanol 

      Güven, Özden Özel; Bayraktar, Meral; Coles, S.J.; Hökelek, Tuncer (2010)
      In the title compound, C14H13N3O, the benzotriazole ring is oriented at a dihedral angle of 13.43 (4)° with respect to the phenyl ring. In the crystal structure, inter­molecular O—H⋯N hydrogen bonds link the mol­ecules ...
    • 2-(1H-Benzotriazol-1-Yl)-3-(2,6-Dichloro­Phen­Yl)-1-Phenyl­Propan-1-Ol 

      Güven, Özden Özel; Çapanlar, Seval; Coles, Simort. J.; Hökelek, Tuncer (2011)
      The asymmetric unit of the title compound, C21H17Cl2N3O, contains two crystallographically independent mol­ecules with similar conformations. The benzotriazole ring is oriented at dihedral angles of 30.61 (5) and 43.36 (5)°, ...
    • 2-(2H-Indazol-2-Yl)-1-Phenyl­ethanone 

      Güven, Özden Özel; Türk, Gökhan; Adler, Philip D. F.; Coles,Simon J.; Hökelek, Tuncer (2013)
      The asymmetric unit of the title compound, C15H12N2O, contains two independent mol­ecules with different conformations, the phenyl ring and indazole mean plane in the two mol­ecules forming dihedral angles of 50.82 (5) and ...
    • 2-(4-Methyl­Pyridin-2-Yl)-4′,4′,6′,6′-Tetra­Kis­(Pyrrolidin-1-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)
      In the title spiro-phosphazene derivative, C33H46N9OP3, the phosphazene and six-membered N/O rings are in flattened chair and twisted-boat conformations, respectively. The naphthalene ring system and the pyridine ring are ...
    • 2-(Naphthalen-1-Yl)-4-(Naphthalen-1-Yl­Methyl­Idene)-1,3-Oxazol-5(4H)-One 

      Gündogdu, Cevher; Alp, Serap; Ergün, Yavuz; Tercan, Barış; Hökelek , Tuncer (2011)
      In the title compound, C24H15NO2, the oxazole ring is oriented at dihedral angles of 10.09 (4) and 6.04 (4)° with respect to the mean planes of the naphthalene ring systems, while the two naphthalene ring systems make a ...
    • 2-(Naphthalen-1-Yl)-4-(Thio­Phen-2-Yl­Methyl­Idene)-1,3-Oxazol-5(4H)-One 

      Gündoğdu, Cevher; Alp,Serap; Ergün, Yavuz; Tercan, Barış; Hökelek, Tuncer (2011)
      The asymmetric unit of the title compound, C18H11NO2S, contains two crystallographically independent mol­ecules. In one mol­ecule, the oxazole and thio­phene rings are oriented at dihedral angles of 17.40 (9) and 18.18 (7)° ...
    • 2-[2-(2,6-Di­Chloro­Benz­Yloxy)-2-Phenyl­Eth­Yl]-2H-Indazole 

      Güven, Özden Özel; Türk, Gökhan; Adler, P. D. F.; Coles, S. J.; Hökelek, Tuncer (2014)
      In the title compound, C22H18Cl2N2O, the indazole ring system is approximately planar [maximum deviation = 0.031 (2) Å], its mean plane is oriented at 3.17 (4) and 19.34 (4)° with respect to the phenyl and benzene rings. ...
    • 2-Hydroxy­Imino-1-Phenyl­Ethanone Thio­Semicarbazone Monohydrate 

      Sarıkavaklı, N.; Babahan, I.; Şahin, E.; Hökelek, T. (2008)
      In the title thio­semicarbazone derivative, C9H10N4OS·H2O, intra­molecular N—H⋯N hydrogen bonds result in the formation of two nearly coplanar five- and six-membered rings, which are also almost coplanar with the adjacent ...
    • 2-Methyl-5,6-Dinitro­Benzimidazolium Chloride 

      Dinçer, Sebla; Gönülalan, Gonca; Tercan, B.; Hökelek, Tuncer (2011)
      In the title compound, C8H7N4O4 +·Cl−, the cation possesses twofold symmetry, with the twofold axis bis­ecting the 2-methyl-5,6-dinitro­benzimidazolium cation. The methyl H atoms are disordered about this ...
    • 2-Methyl-5-Nitro-1H-Benzimidazol-6-Amine Dihydrate 

      Dinçer, Sebla; Dal, Hakan; Hökelek, Tuncer (2011)
      The title benzimidazole mol­ecule, C8H8N4O2·2H2O, is planar with a maximum deviation of 0.079 (2) Å (for one of the O atoms in the nitro group). It crystallized as a dihydrate and inter­molecular O—H⋯O and N—H⋯O hydrogen ...
    • 2-{4-Methyl-N-[(2,3,4,9-Tetra­Hydro-1H-Carbazol-3-Yl)Meth­Yl]Benzene­Sulfon­Amido}­Ethyl 4-Methyl­Benzene­Sulfonate 

      Göçmentürk, Mustafa; Ergün, Yavuz; Mougang-Soume, B.; Delibaş, Nagihan Çaylak; Hökelek, Tuncer (2013)
      In the title compound, C29H32N2O5S2, the indole ring system is nearly planar, with a maximum deviation of 0.013 (2) Å, and the cyclo­hexenone ring has an envelope conformation with the methine C atom as the flap. The two ...
    • 2-{N-[(2,3,4,9-Tetra­Hydro-1H-Carbazol-3-Yl)Meth­Yl]Methyl­Sulfonamido}­Ethyl Methane­Sulfonate 

      Göçmentürk, Mustafa; Ergün, Yavuz; Mougang-Soume, B.; Delibaş, Çaylak Nagihan; Hökelek, Tuncer (2013)
      In the title compound, C17H24N2O5S2, the indole ring system is nearly planar [maximum deviation = 0.032 (1) Å] and the cyclo­hexene ring has a half-chair conformation. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules ...
    • 3,3-Ethyl­Enedithio-3,3A,4,5,10,10B-Hexa­Hydro-2H-Furo[2,3-A]Carbazole 

      Uludağ, Nesimi; Öztürk, Aslı; Hökelek, Tuncer; Erdoğan, Ümit Işık (2009)
      The title compound, C16H17NOS2, consists of a carbazole skeleton with tetra­hydro­furan and dithiol­ane rings. In the indole ring system, the benzene and pyrrole rings are nearly coplanar, forming a dihedral angle of ...
    • 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 ...