Yazar "Hökelek, Tuncer" için Fen Fakültesi listeleme
-
Diaquabis(N,N-diethylnicotinamide-kappa N-1)bis[4-(dimethylamino)benzoato-kappa O]nickel(II)
Hökelek, Tuncer; Süzen, Yasemin; Tercan, Barış; Aybirdi, Özgür; Necefoğlu, Hacali (Int Union Crystallography, 2009)The centrosymmetric title Ni-II complex, [Ni(C9H10NO2)(2)-(C10H14N2O)(2)(H2O)(2)], contains two dimethylaminobenzoate (DMAB), two diethylnicotinamide (DENA) ligands and two water molecules, all of them monodentate. The ... -
Diaquabis[4-(dimethylamino)benzoato-kappa O](isonicotinamide-kappa N-1)manganese(II)
Hökelek, Tuncer; Dal, Hakan; Tercan, Barış; Aybirdi, Özgür; Necefoğlu, Hacali (Int Union Crystallography, 2009)The title Mn-II complex, [Mn(C9H10NO2) (2)(C6H6N2O)(H2O)(2)], contains two 4-(dimethylamino) benzoate (DMAB) anions, one isonicotinamide (INA) ligand and two coordinated water molecules. One of the DMAB anions acts as a ... -
Diaquabis[4-(dimethylamino)benzoato](isonicotinamide)zinc(II)
Hökelek, Tuncer; Dal, Hakan; Tercan, Barış; Aybirdi, Özgür; Necefoğlu, Hacali (Int Union Crystallography, 2009)The molecule of the title Zn-II complex, [Zn(C9H10NO2)(2)( C6H6N2O)(H2O)(2)], contains two 4-(dimethylamino)benzoate (DMAB) ligands, one isonicotinamide (INA) ligand and two water molecules; one of the DMAB ions acts as a ... -
Diaquabis[4-(dimethylamino)benzoato]-kappa O-2,O ';kappa O-(isonicotinamide-kappa N-1)cobalt(II)
Hökelek, Tuncer; Dal, Hakan; Tercan, Barış; Aybirdi, Özgür; Necefoğlu, Hacali (Int Union Crystallography, 2009)The title Co-II complex, [Co(C9H10NO2)(2)(C6H6N2O)(H2O)(2)], contains two 4-dimethylaminobenzoate (DMAB) anions, one isonicotinamide (INA) ligand and two coordinated water molecules. One of the DMAB anions acts as a bidentate ... -
Efficient syntheses and antimicrobial activities of new thiophene containing pyranone and quinolinone derivatives using manganese(iii) acetate: the effect of thiophene on ring closure-opening reactions
Özgür, Mehtap; Yılmaz, Mehmet; Nishino, Hiroshi; Avar, Eda Çınar; Dal, Hakan; Pekel, A. Tarık; Hökelek, Tuncer (Royal Soc Chemistry, 2019)The syntheses of a new series of pyranones, namely, fused pyranones and quinoline-based dihydrofurans, accompanied by 3-alkenyl-substituted structures were investigated. The products were regioselectively formed by ... -
Ethyl 1-oxo-1,2,3,4-tetrahydro-9H-carbazole-3-carboxylate
Hökelek, Tuncer; Dal, Hakan; Tercan, Barış; Göçmentürk, Mustafa; Ergün, Yavuz (Int Union Crystallography, 2009)The title compound, C15H15NO3, contains a carbazole skeleton with an ethoxycarbonyl group at the 3 position. In the indole ring system, the benzene and pyrrole rings are nearly coplanar, forming a dihedral angle of 1.95 ... -
Ethyl 4-hydroxy-9-tosyl-9H-carbazole-3-carboxylate
Hökelek, Tuncer; Dal, Hakan; Tercan, Barış; Gülle, Sibel; Ergün, Yavuz (Int Union Crystallography, 2009)In the title compound, C22H19NO5S, the carbazole skeleton is nearly planar [maximum deviation = 0.043 (1) angstrom] with the pyrrole ring oriented at dihedral angles of 2.32 (6) and 1.77 (6)degrees with respect to the ... -
Formation of novel spiro, spiroansa and dispiroansa derivatives of cyclotetraphosphazene from the reactions of polyfunctional amines with octachlorocyclotetraphosphazatetraene
İbişoğlu, Hanife; Çiftçi, Gönül Yenilmez; Kılıç, Adem; Tanrıverdi, Esra; Un, İlker; Dal, Hakan; Hökelek, Tuncer (Indian Acad Sciences, 2009)Nucleophilic substitution reactions of N4P4Cl8, with di-, tri-, and tetra-functional reagents such as N-methyl-1,3-propanediamine, N,N'-methyl-1,3-propanediamine, spermidine and spermine were investigated in this study. ... -
The new dispirobino and dispiroansa spermine derivatives of cyclotriphosphazenes
Çiftçi, Gönül Yenilmez; Dal, Hakan; Ecik, Esra Tanriverdi; Hökelek, Tuncer; Kılıç, Adem; Senkuytu, Elif (Pergamon-Elsevier Science LTD, 2010)In this study, the crystal structures of the dispiroansa spermine derivatives of cyclotriphosphazene are characterised for the first time. The reaction of spiro-, gem-disubstituted cyclotriphosphazene derivatives, ... -
New NO donor ligands and complexes containing furfuryl or crown ether moiety: Syntheses, crystal structures and tautomerism in ortho-hydroxy substituted compounds as studied by UV-vis spectrophotometry
Şahin, Duygu; Koçoğlu, Serhat; Şener, Öznur; Şenol, Cemal; Dal, Hakan; Hökelek, Tuncer; Hayvalı, Zeliha (Elsevier Science BV, 2015)NO donor ligands were prepared by the condensation of methoxy substituted salicylaldehyde with 5-methylfurfurylamine (I and 2) and 4'-aminobenzo-15-crown 5 (3-5). New crown ether ligands of Schiff base type (3-5) containing ... -
One-dimensional coordination polymers with 4-(2-aminoethyl) pyridine: Synthesis, crystal structures and spectroscopic properties
Karaağaç, Dursun; Kürkçüoğlu, Güneş Süheyla; Şenyel, Mustafa; Şahin, Onur; Hökelek, Tuncer (Pergamon-Elsevier Science LTD, 2017)Two new one-dimensional polymeric metal complexes, namely [Zn(NH3)(mu-4aepy)Ni(mu-CN)(CN)3](n) (1) and [Cu(H2O)(mu-4aepy)Pd(mu-CN)(CN)(3)](n) (2) [4aepy = 4-(2-aminoethyl)pyridine], were synthesized and characterized by ... -
One-dimensional cyano-bridged heterometallic (Cu/Ni and Cu/Pd) complexes with 1-ethylimidazole
Çetinkaya, Fulya; Kürkçüoğlu, Güneş Süheyla; Yeşilel, Okan Zafer; Hökelek, Tuncer; Dal, Hakan (Pergamon-Elsevier Science LTD, 2012)Two new cyano-bridged heteronuclear polymeric complexes, {[Cu(etim)(4)Ni(mu-CN)(2)(CN)(2)]center dot H2O}(n) (1) and [Cu(etim)(4)Pd(mu-CN)(2)(CN)(2)](n) (2) (etim = 1-ethylimidazole) were synthesized and characterized by ... -
Phosphorus nitrogen compounds: Part 34. Syntheses, structural investigations, cytotoxic and biological activities of spiro-ansa-spiro and spiro-bino-spiro tetrameric phosphazene derivatives
Berberoğlu, İpek; Asmafiliz, Nuran; Kılıç, Zeynel; Hökelek, Tuncer; Koç, L. Yasemin; Açık, Leyla; Dal, Hakan (Elsevier Science Sa, 2016)The reactions of N4P4Cl8 with the symmetric N2N2 (1-3) and N2O2 (4) bulky ligands gave partly substituted 2,4-sas (5 and 6), 2,6-sas (7-10) and sbs (11-14) tetrameric phosphazene derivatives. The 2,4-sas-5, 2,6-sas-8 and ... -
Phosphorus-nitrogen compounds part 22. Syntheses, structural investigations, biological activities and DNA interactions of new mono and bis (4-fluorobenzyl) spirocyclophosphazenes
Okumuş, Aytuğ; Kılıç, Zeynel; Hökelek, Tuncer; Dal, Hakan; Açık, Leyla; Öner, Yağmur; Koç, L. Yasemin (Pergamon-Elsevier Science LTD, 2011)The reactions of hexachlorocyclotriphosphazene, N3P3Cl6, with mono (1 and 2) and bis(4-fluorobenzyl) diamines (3-5), FPhCH2NH(CH2)(n)NHR (R=H or FPhCH2-), produce mono (1a and 2a) and bis(4-fluorobenzyl) monospirocyclophosphazenes ... -
Phosphorus-nitrogen compounds part 27. Syntheses, structural characterizations, antimicrobial and cytotoxic activities, and DNA interactions of new phosphazenes bearing secondary amino and pendant (4-fluorobenzyl)spiro groups
Akbaş, Hüseyin; Okumuş, Aytuğ; Kılıç, Zeynel; Hökelek, Tuncer; Süzen, Yasemin; Koç, L. Yasemin; Çelik, Z. Betül (Elsevier France-Editions Scientifiques Medicales Elsevier, 2013)A number of partly (7-9) and fully (10a-12d. Scheme 1) substituted mono(4-fluorobenzyl)spiro cyclotriphosphazenes was prepared. The structures of the compounds were determined by MS, FTIR, 1D and 2D NMR techniques. The ... -
Phosphorus-nitrogen compounds. Part 20: Fully substituted spiro-cyclotriphosphazenic lariat (PNP-pivot) ether derivatives
Okumuş, Aytuğ; Bilge, Selen; Kılıç, Zeynel; Öztürk, Ash; Hökelek, Tuncer; Yılmaz, Filiz (Pergamon-Elsevier Science LTD, 2010)The condensation reactions of partly substituted spiro-cyclotriphosphazenic lariat (PNP-pivot) ethers, N3P3[(o-NHPhO)(2)R]Cl-4 [where R = -CH2CH2- (1) and -CH2CH2OCH2CH2- (2)] with morpholine and 1,4-dioxa-8-azaspiro[4,5]decane ... -
Phosphorus-nitrogen compounds. Part 23: Syntheses, structural investigations, biological activities, and DNA interactions of new N/O spirocyclotriphosphazenes
Asmafiliz, Nuran; Kılıç, Zeynel; Hayvalı, Zeliha; Açık, Leyla; Hökelek, Tuncer; Dal, Hakan; Öner, Yağmur (Pergamon-Elsevier Science LTD, 2012)The Schiff base compounds (1 and 2) are synthesized by the condensation reactions of 2-furan-2-yl-methylamine with 2-hydroxy-3-methoxy- and 2-hydroxy-5-methoxy-benzaldehydes and reduced with NaBH4 to give the new N/O-donor-type ... -
Phosphorus-Nitrogen Compounds. Part 24. Syntheses, Crystal Structures, Spectroscopic and Stereogenic Properties, Biological Activities, and DNA Interactions of Novel Spiro-ansa-spiro- and Ansa-spiro-ansa-cyclotetraphosphazenes
Elmas (Nee Egemen), Gamze; Okumuş, Aytuğ; Kılıç, Zeynel; Hökelek, Tuncer; Açık, Leyla; Dal, Hakan; Koç, L. Yasemin (American Chemical Society, 2012)The reactions of octachlorocyclotetraphosphazene, N4P4Cl8, with N2O2 donor-type aminopodands (1a, 1b, 1g, and 1h) afforded two kinds of derivatives, namely, spiro-ansa-spiro (sas) (2a, 2b, 2g, and 2h) and ansa-spiro-ansa ... -
Phosphorus-nitrogen compounds. Part 29. Syntheses, crystal structures, spectroscopic and stereogenic properties, electrochemical investigations, antituberculosis, antimicrobial and cytotoxic activities and DNA interactions of ansa-spiro-ansa cyclotetraphosphazenes
Elmas, Gamze; Okumuş, Aytuğ; Koç, L. Yasemin; Soltanzade, Hossien; Kılıç, Zeynel; Hökelek, Tuncer; Yavuz, Makbule (Elsevier France-Editions Scientifiques Medicales Elsevier, 2014)A number of novel ansa-spiro-ansa (asa) cyclotetraphosphazenes (1a-5b) was prepared in the range of 63-90% yields. The structures of the compounds were verified by MS, FTIR, H-1, C-13{H-1} and P-31{H-1} NMR, heteronuclear ... -
Phosphorus-nitrogen compounds: New spiro-cyclic phosphazene derivatives. Structure of 4 ',4 ',6 ',6 '-tetrachloro-3,4-dihydro-3-(3-methylpyridin-2-yl)-spiro-[1,3,2-benzoxazaphosphinine-2,2 '-(2 lambda(5),4 lambda(5),6 lambda(5)-cyclotriphosphazene)]. Part XII
Dal, Hakan; Safran, S; Süzen, Yasemin; Hökelek, Tuncer; Kılıç, Z (Elsevier Science BV, 2005)The condensation reactions of [N-[(2-hydroxyphenylmethyl)amino]-methylpyridines (5-8) with trimer, N3P3Cl6, have been afforded partially substituted novel spiro-cyclic phosphazene derivatives (9-12) (Scheme 1). Compounds ...