Kurum Yazarı "Dal, Hakan" Fizik Bölümü İçin Listeleme
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Phosphorus-nitrogen compounds part 33: in vitro cytotoxic and antimicrobial activities, DNA interactions, syntheses, and structural investigations of new mono(4-nitrobenzyl)spirocyclotriphosphazenes
Okumuş, Aytuğ; Akbaş, Hüseyin; Kılıç, Zeynel; Koç, L. Yasemin; Açık, Leyla; Aydın, Betül; Dal, Hakan (Springer, 2016)The condensation reactions of hexachlorocyclotriphosphazene, N3P3Cl6, with N-alkyl-N'-mono(4-nitrobenzyl)diamines (1-3), NO2PhCH2NH(CH2) (n) NHR1 (R-1 = CH3 or C2H5), led to the formation of the mono(4-nitrobenzyl)spiroc ... -
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: 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 ... -
Phosphorus-nitrogen compounds: Part 31. Syntheses, structural and stereogenic properties, in vitro cytotoxic and antimicrobial activities, and DNA interactions of bicyclotetraphosphazenes containing bulky side group
Mutlu, Gurcu; Elmas, Gamze; Kılıç, Zeynel; Hökelek, Tuncer; Koç, L. Yasemin; Türk, Mustafa; Dal, Hakan (Elsevier Science Sa, 2015)Hexachlorocyclotriphosphazene, N3P3Cl6, and octachlorocyclotetraphosphazene, N4P4Cl8, were reacted with K2N2O2 salt of symmetric tetradentate ligand to obtain spiro-bino-spiro [(sbs) (2)] and 2,6-spiro-ansa-spiro [(2,6-sas) ... -
Phosphorus-nitrogen compounds: Synthesis and spectral investigations on new spiro-cyclic phosphazene derivatives
Dal, Hakan; Süzen, Yasemin (Pergamon-Elsevier Science LTD, 2007)The condensation reaction of {N-[(2-hydroxyphenylmethyl)amino]-4,6-dimethylpyridine} (2), which is a reduction product of 1, with trimer N3P3Cl6 affords partially a substituted spiro-cyclic phosphazene derivative (3). The ... -
The reaction of thiophenoxide with amino-substituted chloro-cyclotriphosphazenes
İbişoğlu, Hanife; Dal, Hakan; Hökelek, Tuncer; Kılıç, Adem; Un, İlker; Vardi, Sinan (Pergamon-Elsevier Science LTD, 2009)In the present work, a series of aminocyclotriphosphazene containing sulfur group compounds have been synthesised and characterised by elemental analysis, mass (MS), (1)H and (31)P NMR spectroscopies. The formation of ... -
Spectroscopic determination of acid dissociation constants of some pyridyl Shiff bases
Öğretir, Cemil; Dal, Hakan; Berber, Halil; Taktak, Fadime Fulya (American Chemical Society, 2006)The acid dissociation constants (pK(a)) of eight biologically active pyridyl Shiff bases were determined using a UV-vis spectroscopic technique at 25 +/- 0.1 degrees C. The first acidity constants (pK(a1)) of the ... -
Spectroscopic Determination of the Acid Dissociation Constants of Some 2-Hydroxy Schiff Base Derivatives
Taktak, Fadime Fulya; Berber, Halil; Dal, Hakan; Öğretir, Cemil (American Chemical Society, 2011)In this study the acidity constants of a series of biologically active pyridyl Schiff bases were calculated from UV-visible spectrophotometric data at (25 +/- 0.1)degrees C. The first acidity constants (pK(a1)) of the ... -
Structural characterization, electrochemical, photoluminescence and thermal properties of potassium ion-mediated coordination polymer
Ceyhan, Gökhan; Köse, Muhammet; Tumer, Mehmet; Dal, Hakan (Pergamon-Elsevier Science LTD, 2015)A polymeric potassium complex of p-nitrophenol was synthesized and characterized by analytical and spectroscopic techniques. Molecular structure of the complex was determined by single crystal X-ray diffraction study. X-ray ... -
Syntheses and structural characterizations of a new benzyl(4-methoxyphenyl)dithiophosphinic acid and its Ni(II), Co(II), Zn(II), Cd(II), and Ni-pyridine complexes
Sağlam, Ertuğrul Gazi; Acar, Nurcan; Mougang-Soume, Berline; Dal, Hakan; Hökelek, Tuncer (Taylor & Francis LTD, 2016)Benzyl(4-methoxyphenyl)dithiophosphinic acid (HL) was obtained as solid and was treated with the NiCl(2)6H(2)O, CoCl(2)6H(2)O, ZnCl2, and CdCl2 to prepare its Ni(II), Co(II), Zn(II), and Cd(II) complexes. The nickel complex ... -
Syntheses of and structural studies on some square planar dithiophosphonato Ni(II) complexes, octahedral pyridine derivatives thereof and X-ray crystallography, DFT and molecular docking studies of the latter
Sağlam, Ertuğrul Gazi; Bulat, Elif; Zeyrek, Celal Tuğrul; Dal, Hakan; Hökelek, Tuncer (Elsevier Science BV, 2019)Five new dithiophosphonic acids ((p-MeO-C6H4)PS(SH)(OR), HLn, (n = 1-5); R = 3-pentyl-, HL1; R = 1-phenyl-1-propyl-, HL2; R = 4-tert-butyl benzyl-, HL3; R = diphenylmethyl-, HL4; R=4-tert-butylcyclohexyl-, HL5) were prepared ... -
Syntheses, characterization of and studies on the electrochemical behaviour of ferrocenyl dithiophosphonates and 4-methoxyphenyl dithiophosphonates
Sağlam, Ertuğrul Gazi; Erden, Sevcan; Tutsak, Özgür; Bayraktepe, Dilek Eskikoy; Durmus, Zehra Yazan; Dal, Hakan; Ebinc, Ahmet (Taylor & Francis LTD, 2017)Some 1,3-dithiadiphosphetane 2,4-disulfides (X2P2S4, X: Fc, FcLR; X: CH3OC6H4, LR) were allowed to react with alcohols to obtain dithiophosphonic acids (X(OR)PS2H). These were converted to the corresponding ammonium salts. ... -
Syntheses, characterizations and structures of NO donor Schiff base ligands and nickel(II) and copper(II) complexes
Şenol, Cemal; Hayvalı, Zeliha; Dal, Hakan; Hökelek, Tuncer (Elsevier Science BV, 2011)New Schiff base derivatives (L(1) and L(2)) were prepared by the condensation of 2-hydroxy-3-methoxybenzaldehyde (o-vanillin) and 3-hydroxy-4-methoxybenzaldehyde (iso-vanillin) with 5-methylfurfurylamine. Two new complexes ... -
Syntheses, spectroscopic and crystallographic characterizations of 4-nitrobenzyloxy derivatives and benzofurans from ortho-substituted benzaldehydes and 4-nitrobenzyl bromide
Hayvalı, Zeliha; Dal, Hakan; Köksal, Pınar; Şahin, Duygu; Hökelek, Tuncer (Springer/Plenum Publishers, 2010)A series of benzyloxybenzaldehyde derivatives (1-3) were prepared by the reactions of 4-nitrobenzyl bromide with 4-hydroxy-3-methoxybenzaldehyde (vanillin), 2-hydroxy-3-methoxybenzaldehyde (o-vanillin) and 2-hydroxy-4-me ... -
Syntheses, spectroscopic and structural characterizations and metal ion binding properties of Schiff bases derived from 4 '-aminobenzo-15-crown-5
Güler, Hüseyin; Hayvalı, Zeliha; Dal, Hakan; Hökelek, Tuncer (Pergamon-Elsevier Science LTD, 2012)A series of benzyloxybenzaldehyde derivatives (1-4) were synthesized by the reactions of 4-(bromomethyl)benzonitrile with 4-hydroxy-3-methoxybenzaldehyde (vanillin), 2-hydroxy-3-methoxybenzaldehyde (o-vanillin), ... -
Synthesis and characterization of a proton transfer salt between 2,6-pyridinedicarboxylic acid and 2-aminobenzothiazole, and its complexes and their inhibition studies on carbonic anhydrase isoenzymes
İlkimen, Halil; Yenikaya, Cengiz; Sarı, Musa; Bülbül, Metin; Tunca, Ekrem; Dal, Hakan (Taylor & Francis LTD, 2014)A novel proton transfer compound (HABT)(+)(Hdipic)(-) (1) obtained from ABT and H(2)dipic and its metal complexes (2-5) have been prepared and characterized by spectroscopic techniques. Single crystal X-ray diffraction ... -
Synthesis and characterization of complexes of a novel proton transfer salt and their inhibition studies on carbonic anhydrase isoenzymes
İlkimen, Halil; Yenikaya, Cengiz; Sarı, Musa; Bülbül, Metin; Tunca, Ekrem; Dal, Hakan; Bas, Metin (Taylor & Francis LTD, 2015)A novel proton transfer compound (HClABT)(+)(HDPC.H2DPC)(-) (1) and its Fe(III), Co(II), Ni(II) and two different Cu(II) complexes (2-6) have been prepared and characterized by spectroscopic techniques. Additionally, single ... -
Synthesis and characterization of Tetrakis-mu-[N-phenylanthranilato] (O,O ')-bis[(4-vinylpyridine copper(II)] complex
Taş, Murat; Karabag, Elif; Titiz, Abdullah; Kaya, Mukadder; Ataseven, Mehmet; Dal, Hakan (Walter De Gruyter GMBH, 2013)The complex, tetrakis-mu-[2-(phenylamino)benzoato](O,O')-bis[4-vinylpyridine copper(II)] (1) was synthesized by the reaction of N-phenylanthranilic acid and copper powder in the presence of 4-vinylpyridine and crystallized ... -
Synthesis and crystal structure of cyano-bridged three dimensional polyheteronuclear complex
Karaağaç, Dursun; Kürkçüoğlu, Güneş Süheyla; Yeşilel, Okan Zafer; Hökelek, Tuncer; Dal, Hakan (Walter De Gruyter GMBH, 2012)The cyano-bridged 3D heteronuclear polymeric complex, [Cd(NH3)(mu-ampy)Ni(mu-CN)(4)](n), (1) (ampy = 3-aminomethylpyridine), has been synthesized and characterized by FT-IR and Raman spectral, thermal and elemental analyses. ...