Yazar "Ulkuseven, Bahri" için listeleme
-
5-Methyl-2-hydroxy-acetophenone-S-methyl-thiosemicarbazone and its nickel-PPh3 complex. Synthesis, characterization, and DFT calculations
Guveli, Sukriye; Kilic-Cikla, Isin; Ulkuseven, Bahri; Yavuz, Metin; Bal-Demirci, Tulay (Elsevier Science Bv, 2018)A tridentate Schiff base ligand (5-methyl-2-hydroxy-acetophenone-S-methyl-thiosemicarbazone, H2L) and its mononuclear nickel complex, [NiL(PPh3)], were obtained and characterized by spectroscopic techniques. Structural ... -
5-Methyl-2-hydroxy-acetophenone-thiosemicarbazone and its nickel(II) complex: Crystallographic, spectroscopic (IR, NMR and UV) and DFT studies
Kilic-Cikla, Isin; Guveli, Sukriye; Yavuz, Metin; Bal-Demirci, Tulay; Ulkuseven, Bahri (Pergamon-Elsevier Science Ltd, 2016)A new 5-methyl-2-hydroxy-acetophenone-thiosemicarbazone ligand (L) and its nickel(II) complex [Ni(L)(PPh3)] were synthesized. The crystal structure of free ligand and its complex has been determined by single crystal X-ray ... -
The asymmetric ONNO complexes of dioxouranium(VI) with N-1,N-4-diarylidene-S-propyl-thiosemicarbazones derived from 3,5-dichlorosalicylaldehyde: Synthesis, spectroscopic and structural studies
Özdemir, Namık; Sahin, Musa; Bal-Demirci, Tulay; Ulkuseven, Bahri (Pergamon-Elsevier Science Ltd, 2011)Two uranyl complexes having the composition [UO2(L)DMSO] were synthesized using salicyl- and 3,5-dichlorosalicylaldehyde-S-propyl-thiosemicarbazones as starting materials. The S-propyl-thiosemicarbazidato structures in the ... -
Chelate structures of 5-(H/Br)-2-hydroxybenzaldehyde-4-allyl-thiosemicarbazones (H2L): Synthesis and structural characterizations of [Ni(L)(PPh3)] and [Ru(HL)(2)(PPh3)(2)]
Ulkuseven, Bahri; Bal-Demirci, Tuelay; Akkurt, Mehmet; Yalcin, Serife Pinar; Büyükgüngör, Orhan (Pergamon-Elsevier Science Ltd, 2008)The reactions of 5-R-2-hydroxybenzaldehyde-4-allyl-thiosemicarbazone [R: H (L-1); Br (L-2)] with {M-II(PPh3)nCl(2)] (M = Ni, n = 2 and M = Ru, n = 3) in a 1:1 molar ratio have given stable solid complexes corresponding to ... -
Dioxouranium(VI) complexes with N2O2 chelating thiosemicarbazones [UO2L(R-OH)]
Sahin, Musa; Bal-Demirci, Tulay; Özdemir, Namık; Ulkuseven, Bahri (Taylor & Francis Ltd, 2013)Three alkylated thiosemicarbazones (1-3) substituted on sulfur were synthesized using 5-bromosalicylaldehyde as starting material. The template reactions of the S-alkyl-thiosemicarbazones in the presence of dioxouranium(VI) ... -
Divalent nickel complexes of thiosemicarbazone based on 5-bromosalicylaldehyde and triphenylphosphine: Experimental and theoretical characterization
Guveli, Sukriye; Özdemir, Namık; Ulkuseven, Bahri; Bal-Demirci, Tulay (Pergamon-Elsevier Science Ltd, 2016)Two nickel(II) complexes containing 5-bromosalicylidene-N-methyl-S-methyl-isothiosemicarbazone (H(2)SMeNMeTsc) and 5-bromosalicylidene-N-methyl-thiosemicarbazone (H(2)NMeTsc) with triphenylphosphine were synthesized. The ... -
Electrochemistry and structural properties of new mixed ligand nickel(II) complexes based on thiosemicarbazone
Guveli, Sukriye; Koca, Atif; Özdemir, Namık; Bal-Demirci, Tulay; Ulkuseven, Bahri (Royal Soc Chemistry, 2014)Mixed ligand nickel(II) complexes of 5-chloro-2-hydroxybenzophenone-N-R-thiosemicarbazone (R: -CH3 (L-1), -CH2-CH=CH2 (L-II)) and triphenylphosphine were synthesized. The structures of the complexes were characterized by ... -
Hydrogen-bonded and -stacked nickel(II) thiosemicarbazone complexes: Synthesis, spectral and structural studies
Guveli, Suekriye; Özdemir, Namık; Bal-Demirci, Tuelay; Soylu, Mustafa Serkan; Ulkuseven, Bahri (Springer, 2019)Mixed ligand Ni(II) complexes were synthesized from triphenylphosphine and S-methyl- or S-ethyl-isothiosemicarbazone ligands derived from 3-bromo-5-chloro-2-hydroxy-benzaldehyde. The complexes were characterized by ... -
Iron(III) and nickel(II) complexes as potential anticancer agents: synthesis, physicochemical and structural properties, cytotoxic activity and DNA interactions
Bal-Demirci, Tulay; Congur, Gulsah; Erdem, Arzum; Erdem-Kuruca, Serap; Özdemir, Namık; Akgun-Dar, Kadriye; Ulkuseven, Bahri (Royal Soc Chemistry, 2015)Template reactions of 2-hydroxy-R-benzaldehyde-S-methylisothiosemicarbazones (R = 3-methoxy or 4-hydroxy) with the corresponding aldehydes in the presence of FeCl3 and NiCl2 yielded N-1, N-4-disalicylidene chelate complexes. ... -
Nickel(II) complexes of ONS and ONN chelating thiosemicarbazones with triphenylphosphine co-ligands
Guveli, Suekriye; Bal-Demirci, Tuelay; Özdemir, Namık; Ulkuseven, Bahri (Springer, 2009)Reactions of 5-bromo-2-hydroxy-benzaldehyde-S-R-4-R-1-thiosemicarbazones, [R, R-1 = H,H (L-1); CH3, H (L-2); H, C6H5 (L-3); CH3, C6H5 (L-4)] with [Ni(PPh3)(2)Cl-2] in 1:1 molar ratio yielded complexes of general formula ... -
Quantum-chemical, spectroscopic and X-ray diffraction studies on nickel complex of 2-hydroxyacetophenone thiosemicarbazone with triphenylphospine
Guveli, Sukriye; Özdemir, Namık; Bal-Demirci, Tuelay; Ulkuseven, Bahri; Dinçer, Muharrem; Andac, Omer (Pergamon-Elsevier Science Ltd, 2010)Reaction of 2-hydroxyacetophenone thiosemicarbazone with [Ni(PPh(3))(2)Cl(2)] in optimized conditions afforded a mixed ligand complex with an isolated triphenylphosphine molecule. The structure was characterized by elemental ... -
Spectroscopic, electrochemical and X-ray diffraction studies on nickel(II)-complexes of acetophenone thiosemicarbazones substituted six-carbon groups
Guveli, Sukriye; Özdemir, Namık; Koca, Atif; Bal-Demirci, Tulay; Ulkuseven, Bahri (Elsevier Science Sa, 2016)Reactions of [Ni(PPh3)(2)Cl-2] with 3-Bromo-5-chloro-2-hydroxyacetophenone-N-4-hexyl ((LH2)-H-1), cyclohexyl (L2H2) and phenyl ((LH2)-H-3)-thiosemicarbazones resulted in four coordinated (ONSP) nickel(II) complexes, ... -
Structural and spectroscopic characterization of a thiosemicarbazidatodioxouranium(VI) complex: A combined experimental and DFT study
Sahin, Musa; Özdemir, Namık; Bal-Demirci, Tulay; Ulkuseven, Bahri; Dinçer, Muharrem; Soylu, Mustafa Serkan (Pergamon-Elsevier Science Ltd, 2015)The title thiosemicarbazidatodioxouranium(VI) compound was synthesized and characterized by FT-IR, NMR and UV-vis spectroscopies. Solid state structure of the compound was confirmed by X-ray crystallography. Besides, the ... -
Supramolecular nickel complex based on thiosemicarbazone. Synthesis, transfer hydrogenation and unexpected thermal behavior
Guveli, Sukriye; Bal-Demirci, Tulay; Ulkuseven, Bahri; Özdemir, Namık (Pergamon-Elsevier Science Ltd, 2016)The cationic thiosemicarbazone complex of nickel containing triphenylphosphine as coligand was synthesized through the isopropanol-assisted hydrogen transfer reaction. The thiosemicarbazone ligand (LH2) and its cationic ... -
Synthesis, structural, cytotoxic and pharmacokinetic evaluation of some thiosemicarbazone derivatives
Suleymanoglu, Mediha; Erdem-Kuruca, Serap; Bal-Demirci, Tulay; Özdemir, Namık; Ulkuseven, Bahri; Yaylim, Ilhan (Wiley, 9999)Iron(III) and nickel(II) complexes bearing a thiosemicarbazone framework were synthesized by a one-pot synthesis method. The structures were characterized by elemental analysis, IR, H-1 NMR, APCI Mass, conductivity, magnetic ... -
Synthesis, X-ray crystal structures, thermal and electrochemical properties of thiosemicarbazidatodioxouranium(VI) complexes
Sahin, Musa; Koca, Atif; Özdemir, Namık; Dinçer, Muharrem; Büyükgüngör, Orhan; Bal-Demirci, Tulay; Ulkuseven, Bahri (Royal Soc Chemistry, 2010)The stable uranyl complexes, [UO2(L)C9H19OH], were obtained from 3,5-dichlorosalicyl-(L-I) and salicyl-aldehyde-S-propyl-thiosemicarbazones (L-II) with substituted-salicylaldehyde in nonyl alcohol. The structures of the ... -
X-ray diffraction, spectroscopic and DFT studies on nickel(II)-triphenylphosphine complexes of 2-hydroxyacetophenone thiosemicarbazones
Kilic-Cikla, Isin; Guveli, Sukriye; Bal-Demirci, Tulay; Aygun, Muhittin; Ulkuseven, Bahri; Yavuz, Metin (Pergamon-Elsevier Science Ltd, 2017)This work presents a combined experimental and theoretical study on new synthesized ONN and ONS chelating 2-hydroxyacetophenone thiosemicarbazone ligands and their nickel(II) complexes with triphenylphosphine co-ligand. ...
