Başlık için Fizik Mühendisliği Bölümü Makale Koleksiyonu listeleme

Toplam kayıt 723, listelenen: 21-40

    • 2,7-Dioxa-15,19-Diazatricyclo[19,4,0,0(8,13)]Pentacosa-8,10,12,21,23,25(1)-Hexaene 

      Hökelek, Tuncer; Kaya, E. E.; Kılıç, Z. (Munksgaard Int Publ Ltd, 2001)
      The title molecule, C21H24N2O2, is a macrocyclic multidentate Schiff base ligand containing two imine N and two ether O atoms which has a crystallographic twofold axis. The macrocyclic inner-hole size, estimated as twice ...

    • 2-(1,2,3,4-Tetrahydrocarbazol-2-Yl)Butylamine 

      Hökelek,T.; Patir, S.; Ergün , Y.; Okay ,G. (Munksgaard Int Publ Ltd, 2001)
      The title compound, C16H22N2, consists of a carbazole skeleton with a butylamine side chain at position 2. Molecules are linked about inversion centres by N-H . . .N hydrogen bonds [N . . .N 2.950 (3) Angstrom] to form ...

    • 2-(1H-Benzimidazol-1-Yl)-1-(2-Furyl)Ethanone O-Propyloxime 

      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 = 0.013 (1) Å] is oriented at a dihedral angle of 75.32 (4)° with respect to the furan ring. An intra­molecular ...

    • 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-(2,6-Di-Tert-Butyl-4-Methylphenoxy)-2,4,4,6,6,8,8-Heptachlorocyclo-2 Lambda(5),4 Lambda(5),6 Lambda(5),8 Lambda(5)-Tetraphosphazatetraene 

      Hökelek, Tuncer; Kiliç, A.; Begeç , S.; Kiliç , Z.; Yildiz , M. (Munksgaard Int Publ Ltd, 1996)
      The title compound, C15H23Cl7N4OP4, consists Of a saddle-shaped cyclic tetrameric phosphazene ring and a bulky 2,6-di-tert-butyl-4-methylphenoxy side group. The bulky group substituent is instrumental in determining the ...

    • 2-(2,6-Di-Tert-Butylphenoxy)-2',4,4,4',4',6,6,6',6'-Nonachloro-2,2'-Bi(Cyclotri-Lambda-5-Phosphazene) 

      Hökelek, Tuncer; Kiliç ,Z.; Kiliç,A. (Munksgaard Int Publ Ltd, 1994)
      The title compound consists of the bulky 2,6-di-tert-butylphenoxy group and two phosphazene rings joined by a P-P bond [2.193 (2) angstrom]. The bulky group plays a predominant role in the distortion of the molecule as a ...

    • 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 ...