Yayın tarihi için Kimya Bölümü listeleme
Toplam kayıt 209, listelenen: 21-40
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4-[2-(2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)hydrazin-1-yl] benzo-nitrile
(2010)In the title compound, C 13H 11N 3O 4, the dioxane ring adopts an envelope conformation with the C atom bonded to the dimethyl group in the flap position [deviation = 0.613 (1) Å]. The nitrile group and the attached benzene ... -
Tetraaquabis(orotato-O)cobalt(II) dihydrate
(2010)In the title CoII complex, [Co(C5H3N 2O4)2(H2O)4]·2H2O, the CoII ion is located on an inversion center and is coordinated by two orotate (2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylate) anions and four water mol-ecules ... -
Bis(isonicotinamide-κN1)bis(4-methylbenzoato-κO) copper(II) dihydrate
(2010)In the centrosymmetric title compound, [Cu(C8H7O 2)2(C6H6N2O) 2]·2H2O, the CuII ion is located on a crystallographic inversion center. The asymmetric unit is completed by one 4-methylbenzoate anion, one isonicotinamide ... -
Bis(4-methoxybenzoato)-κ2O,O′;κO- bis(nicotinamide-κN1)zinc(II)
(2010)The asymmetric unit of the title complex, [Zn(C8H 7O3)2(C6H6N 2O)2], contains three crystallographically independent molecules with similar configurations. The ZnII cation is coordinated by two N atoms of two nicotinamide ... -
Spectrophotometric determination of acidity constants of some macrolides in acetonitrile-water binary mixtures
(2010)The acidity constants of eight macrolides (erythromycin, roxithromycin, oleandomycin, azithromycin, josamycin, tylosin tartrate, tilmicosin and spiramycin) have been determined in acetonitrile-water binary mixtures (30%, ... -
Boric acid complexes with organic biomolecules: Mono-chelate complexes with salicylic and glucuronic acids
(2010)Two mono-chelate borate complexes, lithium mono-salicylatoborate and sodium mono-glucuronatoborate, are reported for the first time. The complexes were isolated from aqueous solutions and characterized by FTIR (Fourier ... -
Determination of pKa values of some antihypertensive drugs by liquid chromatography and simultaneous assay of lercanidipine and enalapril in their binary mixtures
(Elsevier B.V., 2010)In this study, pKa values were determined using the dependence of the retention factor on the pH of the mobile phase for three ionizable substances, namely, enalapril, lercanidipine and ramipril (IS). The effect of the ... -
Electroanalytical characteristics of antipsychotic drug ziprasidone and its determination in pharmaceuticals and serum samples on solid electrodes
(Elsevier B.V., 2010)Ziprasidone is a psychotropic agent used for the treatment of schizophrenia. Its oxidation was investigated electrochemically at boron-doped diamond and glassy carbon electrodes using cyclic, differential pulse, and square ... -
Phosphate removal potential of the adsorbent material prepared from thermal decomposition of alunite ore-KCl mixture in environmental cleanup
(Elsevier B.V., 2010)This study focused on the preparation of a thermal decomposition product of alunite and potassium chloride mixture as an adsorbent for the removal of phosphate ions from aqueous solutions. The adsorbed phosphate ions were ... -
Spectrophotometric determination of acidity constants of some novel methotrexate-like compounds in water and acetonitrile-water binary mixtures
(2010)The acidity constants of four novel methotrexate like compounds (NPALA; (N-[4-[[2-hydroxy -1-naphtyl)methylene]amino]benzoyl-?-alanin) TPALA; (N-[4-(2-thiophene-aldiminobenzoyl)-?-alanin), SAL-ALA; N-[4-[[2-hydroxyphenyl ... -
Simultaneous estimation of ceftazidime and ceftizoxime in pharmaceutical formulations by HPLC method
(2011)The aim of the present study was to develop a fast, sensitive and reliable method for rapid screening of cephalosporin injectable dosage forms namely ceftazidime and ceftizoxime to the detection of counterfeit and substandard ... -
Determination of pK a values of cefdinir and cefixime by LC and spectrophotometric methods and their analysis in pharmaceutical dosage forms
(Friedr. Vieweg und Sohn Verlags GmbH, 2011)The pK a values of cefdinir and cefixime, which are used in the treatment of bacterial infections, have been determined precisely in water and methanol-water binary mixtures (20% v/v) using spectrophotometric titration and ... -
Optimization of the experimental conditions for macrolide antibiotics in high performance liquid chromatography by using response surface methodology and determination of tylosin in milk samples
(2011)The simple, rapid and sensitive liquid chromatographic separation of five macrolides (tilmicosin, erythromycin, tylosin, roxithromycin and josamycin) widely used in food producing animals was developed. Response surface ... -
Fast method for synthesis of alkyl and aryl-N-methylnitrones
(MDPI AG, 2011)A simple, fast, efficient and eco-friendly procedure was developed for the synthesis of alkyl and aryl-N-methylnitrones. The corresponding nitrones of aromatic aldehydes, aliphatic aldehydes and alicyclic carbonyl compounds ... -
Electrochemical properties of copper complex of Furdap amide in non-aqueous medium
(2011)The electrochemical behavior of Cu (II)-Furdap amide complex has been investigated by the use of several electrochemical methods in DMSO on platinum electrode. The number of electrons transferred was calculated by bulk ... -
A comparative examination of mono- and bis-chelate salicylatoborate complexes and the crystal structure of layered magnesium bis-salicylatoborate
(2011)Complexes of boric acid with sodium- and magnesium-salicylates were prepared and analyzed to examine the structural consequences resulting from the coordination of the salicylate ligand in mono- and bis-chelate modes. The ... -
Antimicrobial activities, absorption characteristics and tautomeric structures of o,o’-hydroxyazo dyes containing an acryloyloxy group and their chromium complexes
(Hacettepe University, 2012)E-1-((2-hydroxy-5-methylphenyl)diazenyl)naphthalene-2,7-diol’ün ve akrilat türevlerinin ve onların krom komplekslerinin farklı çözücüler, pH ve sıcaklıklardaki UV-VIS davranışları tespit edildi. Çözücü içinde boyalar azo ... -
Synthesis, spectroscopic and thermal characterization of non-metal cation (nmc) pentaborates salts containing cations derived from histidine and arginine
(Hacettepe University, 2012)The new non-metal cation (NMC) pentaborate structures of cationic histidine and arginine aminoacids were synthesized and characterized using spectroscopic (11B NMR and IR) methods. Their thermal properties have been ... -
Spectroscopic properties of 2,2’-[Thiobis(p-phenylenenitrilo-methylidyne)]bis(4-chloro/bromo/methyl/nitro/methoxy)phenol
(Hacettepe University, 2012)Novel Schiff base has been synthesized from the reaction of 4,4’-diaminodiphenyl sulfide with 2-hydroxy5-substituebenzaldehyde and 2-hydroxynaphtaldehyde. The compounds were characterized by elemental analysis, FT-IR, 1 H ... -
A validated RP-HPLC method for the estimation of ornidazole in pharmaceutical dosage forms
(Hacettepe University, 2012)A new, simple, rapid, selective, precise and accurate isocratic reverse phase high performance liquid chromatography assay has been developed and validated for assay of Ornidazole in tablet formulations. Tinidazole was ...