Güncel Gönderiler: FEF, Kimya Bölümü Koleksiyonu
Toplam kayıt 455, listelenen: 201-220
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Synthesis, characterization, crystal structures and thermal and fluorescence studies of dinuclear and polymeric silver(I) complexes of 5,5-diethylbarbiturate with 2,5-dimethylpyrazine and piperazine involving Ag-Ag interactions
(Springer Link, 2010)Two silver(I) complexes, [Ag(dmpyz) 2][Ag(barb) 2] (1) and {[Ag(ppz)][Ag(barb) 2]·H 2O} n (2) (barb = 5,5-diethylbarbiturate, dmpyz = 2,5-dimethylpyrazine and ppz = piperazine), have been synthesized and characterized by ... -
Equilibrium and kinetic studies on the removal of basic dye using raw and thermal-activated fatsa bentonite
(2010)The adsorption behavior of crystal violet (CV+) from aqueous solution onto raw Fatsa (RFB) and thermalactivated Fatsa (TAFB) bentonite samples was investigated as a function of parameters, such as pH, temperature, initial ... -
Cloning, expression and characterization of highly thermo- and pH-stable maltogenic amylase from a thermophilic bacterium Geobacillus caldoxylosilyticus TK4
(Elsevier, 2010)Maltogenic amylases (MAases), a subclass of cyclodextrin (CD)-hydrolyzing enzymes, belong to glycoside hydrolase family 13. A gene corresponding to MA in Geobacillus caldoxylosilyticus TK4 (GcaTK4MA) was cloned into pET28a(+) ... -
Performance of magnesium oxide-coated bentonite in removal process of copper ions from aqueous solution
(Elsevier, 2010)This paper presents the adsorption of Cu(II) ions from aqueous solution on modified Unye bentonite. Adsorption of Cu(II) ions by magnesium oxide-coated bentonite (MCB) sample was investigated as a function of the initial ... -
Photodimerizations of hydroxy- and benzoylated 4-azachalcones and quantum chemical investigation of the reactions
(Springer Link, 2010)Photodimerization reactions of compounds 4-6 gave four new cyclobutane-containing compounds (7-9) with full control over the stereochemistry at the four stereogenic centers. These new cyclobutane- containing compounds had ... -
Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium-bentonite
(Wiley, 2010)BACKGROUND: The removal of Reactive Red 120 (RR 120) from aqueous solutions using cetylpyridinium modified Resadiye bentonite (CP-bentonite) prepared by ion exchange was investigated with particular reference to the effects ... -
Volatile constituents and antimicrobial activities from flower and fruit of arbutus unedo L.
(2010)Essential oils isolated by hydrodistillation from flower and fruit of Arbutus unedo growing in Turkey were analyzed by GC and GC/MS. Forty-nine compounds, representing around 95% of the total oils were identified. ... -
Radiological and chemical assessment of phosphate rocks in some countries
(Elsevier, 2010)In this study, the radiological, structural and chemical characterizations of Mardin-Mazi{dotless}da?i{dotless} phosphate rock, which is an important phosphate fertilizer source in Turkey were investigated and compared to ... -
Microwave-assisted synthesis of novel 2,4-dihydro-5-[4-(trifluoromethyl) phenyl]-3h-1,2,4-triazol-3-ones and potentiometric determination of their pKa in nonaqueous solvents
(Wiley, 2010)The novel 4-amino- or 4-aryl-substituted 2,4-dihydro-5-[(4-trifluoromethyl) phenyl]-3H-1,2,4-triazol-3-ones 3a-3g were synthesized by reaction of N-(ethoxycarbonyl)-4-(trifluoromethyl)benzenehydrazonic acid ethyl ester (2) ... -
Synthesis, characterization and properties of tetra((l-hydroxyimino- methylnaphthalen-2-yloxy)methyl)etheneandits homo-dinuclear metal complexes: A combined experimental and theoretical investigation
(Elsevier B.V., 2010)Tetra((l-hydroxyiminomethylnaphthalen-2-yloxy)methyl)ethene (THlMNYOME), H4L, was synthesized by the agents of 2-hydroxy-l -naphtaldehyde, tetra(bromomethyl)ethene and hydroxylamine hydrochloride in two steps. Characterization ... -
Syntheses, crystal structures, spectroscopic, fluorescence and thermal properties of silver(I) 5,5-diethylbarbiturato complexes with some aminopyridines
(Elsevier S.A., 2010)Three new silver(I) complexes of 5,5-diethlybarbiturate (barb), [Ag(barb)(apy)]·H2O (1), {[Ag(?-ampy)][Ag(?-barb) 2]}n (2) and [Ag(barb)(dmamhpy)] (3) [apy = 2-aminopyridine, ampy = 2-aminomethylpyridine and dmamhpy = 2- ... -
InVitro antioxidant activities of new 4,5-dihydro-1H-1,2,4-triazol-5-ones having thiophene ring with their acidic properties
(Hindawi, 2011)Seven new 3-alkyl(aryl)-4-(2-thienymethylenamino)-4,5-dihydro- 1H-1,2,4-triazol-5-ones (2) were synthesized by the reactions of 3-alkyl(aryl)- 4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones (1) with thiophene-2-carbaldehyde. ... -
Syntheses, crystal structures, fluorescent, and thermal properties of nickel(II) 5,5-diethylbarbiturate complexes with (2-aminomethyl), (2-aminoethyl), and (2-hydroxyethyl)pyridines
(Taylor & Francis, 2011)Three nickel(II) complexes of 5,5-diethlybarbiturate (barb) with (2-aminomethyl)pyridine (ampy), (2-aminoethyl)pyridine (aepy), and (2-hydroxyethyl)pyridine (hepy), [Ni(barb-N)2(ampy)2] (1), [Ni(barb-N,O)(aepy)2](barb)·H2O ... -
Structural characterization of aniline-bentonite composite by FTIR, DTA/TG, and PXRD analyses and BET measurement
(Taylor & Francis, 2011)The aniline species incorporated into the acid-activated bentonite matrices leads to the decay of the skeletal stretches centered at 1041 cm-1 and the rise of new features in the phenyl ring frequency region, 1700-1400 ... -
Novel coordination polymers of metal(II) succinates with 4-aminopyridine: Synthesis, spectroscopic, thermal, and fluorescent properties
(Wiley, 2011)Four novel divalent transitional metal succinates (suc) with 4-aminopyridine (apy), [M(apy)2(H2O)2(?-suc) ]n [M = Ni (1), Co (2)] and [M(apy)2(H2O)(suc)] [M = Cu (3), Zn (4)] were synthesized and characterized by elemental ... -
Synthesis of novel triazol compounds containing isatin as potential antibacterial and antifungal agents by microwave and conventional methods
(Sage Publishing, 2011)Microwave irradiation has been used to accelerate the conversion of isatin (1a) and 5-nitroisatin (1b) into their Schiff bases 3-[5?-aryl(alkyl)- 2?,4?-dihydro-1?,2?,4?-triazol-3?-on- 4?-yl]iminoisatin (3a-g) and ... -
4-Amino-3-(p-chlorophenyl)-5-(p-methoxybenzyl)-4H-1,2,4-triazole: X-ray and DFT-calculated structures
(2011)The title compound, 4-amino-3-(p-chlorophenyl)-5-(p-methoxybenzyl)-4H-1,2, 4- triazole I , C16H15ClN4O), has been determined using X-ray diffraction techniques and the molecular structure has also been optimized at the ... -
New olefinic centred binuclear clamshell type phthalocyanines: Design, synthesis, structural characterisation, the stability and the change in the electron cloud at olefine-based symmetrical diphthalonitrile fragment by the combined application of UV-Vis electronic structure and theoretical methods
(Elsevier, 2011)The olefinic centred Schiff base (3) was obtained from the condensation of substituted dialdehyde (1) with 2-amino-4-methylphenol (2) in a 1:2 ratio. The diphthalonitrile derivative (5) was prepared by the reaction of ... -
Determination of protonation constants of some 3-alkyl(aryl)-4-(ptert- butyl(benzyl/benzyliden)amino)-4,5-dihydro-1H-1,2,4-triazole-5- one deriveatives with spectrophotometric method
(2011)The protonation constant values of different twelve 3-alkyl(aryl)-4-(p-t-butyl(benzyl/ benzyliden)amino)-4,5-dihydro-1H-1,2,4-triazole-5-one derivatives have been determined in ethanol %50 - water %50 mixtures by ... -
Experimental and theoretical study on the structure and vibrational spectra of β-2-aminopyridinium dihydrogenphosphate
(Elsevier, 2011)Experimental and theoretical vibrational spectra of ?-2- aminopyridinium dihydrogenphosphate (?-2APDP) have been investigated. The FT-IR spectrum of ?-2APDP was recorded in the region 4000-400 cm -1. The optimized molecular ...