Güncel Gönderiler: Kimya-Makale Koleksiyonu
Toplam kayıt 678, listelenen: 621-640
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Synthesis and characterization of Zn(II), Cu(II) and Ni(II) complexes with bidentate Schiff base ligands: Complexation studies and the determination of stability constant (Ke)
(Interperiodica, 2001)The nickel(II), copper(II), and zinc(II) complexes with Schiff bases derived from 1-naphthylarnine and 2-hydroxy naphthaline-1-carbaldehyde (HL) or 1,4-diaminobutane and 4-methoxy benzaldehyde (L') have been prepared. The ... -
A new synthesis of bromobenzotropones: Oxidation of 8-bromo-5H-benzo[a]cycloheptene
(Scientific Technical Research Council Turkey, 2002)The oxidation of 8-bromo-5H-belizo[a]cycloheptene with some oxidation reagents was studied. 2,3-and 4,5-benzotropone derivatives were obtained. The structures of the bromobenzotropones were determined by H-1- and C-13-NMR data. -
Synthesis and complexation of new substituted dibenzodiaza macrocyclic diester compounds
(Marcel Dekker Inc, 2012)The synthesis of some new precoursers that contain substituted benzo units and their use in the preparation of azama-crocyclic diester compounds are reported. These precoursers and ligands were characterized by Elemental ... -
Preconcentration and separation of copper (II) with solvent extraction using N,N '-bis(2-hydroxy-5-bromo-benzyl)1,2 diaminopropane
(Elsevier Science Bv, 2002)Preconcentration and separation with solvent extraction of Cu(II) from aqueous solution using N,N'-bis(2-hydroxy-5-bromo-benzyl)1,2 diaminopropane (H,L) as the new extractant has been studied. Separation of Cu(II) from ... -
The inhibitory effects of some pesticides on human erythrocyte carbonic anhydrase activity (in vitro)
(Parlar Scientific Publications (P S P), 2002)The effects of Folidol(TM) [O,O-dimethyl O-(4-nitrophenyl) phosphorothionate; methyl parathion], Amin'a(TM) [dimethylamine salt of 2,4-D; 2,4-dichlorophenoxy acetic acid dimethylamine], Trimidal(TM) [alpha-(2-chloropheny ... -
Structure and electrochemical behaviour of Bis[N-(4-methylphenyl)salicylaldimine]copper(II) N,N '-dimethylformamide solvate
(Wiley-V C H Verlag GMBH, 2002)The molecular model of mononuclear complex formed, through a reaction between N-(4-methylphenyl)salicylaldimine and Cu-II ion was determined using x-ray diffraction method. The Cu-II coordination was found to have a distorted ... -
Selective preconcentration and determination of cobalt(II) using N,N '-bis(2-hydroxy-5-bromo-benzyl)-1,2-diaminopropane
(Taylor & Francis Inc, 2002)The present work describes a selective, rapid, and economical method for the determination of cobalt using N,N' -bis(2-hydroxy-5-bromo-benzyl)-1,2-diaminopropane (HBDAP). The investigation included a study of the characteristics ... -
Purification and characterisation of a polyphenol oxidase from boletus erythropus and investigation of its catalytic efficiency in selected organic solvents
(Elsevier Sci Ltd, 2010)Polyphenol oxidase (PPO) was purified from Boletus erythropus using a Sepharose 4B-L-tyrosine-p-amino benzoic acid affinity column. Optimum pH and temperature were found to be 8.0 and 20 degrees C, respectively, using ... -
Contribution of electrolyte pH and deposition potentials to the magnetic anisotropy of electrodeposited nickel films
(Elsevier Science Bv, 2010)The influence of electrolyte pH and cathode potential on the magnetic properties of single layer Nickel films electrodeposited on polycrystalline titanium substrates was studied. The films were deposited at the electrolyte ... -
Thermal decomposition of linear tetranuclear copper(II) complexes including mu-azido bridges
(Springer, 2010)In the first instance, mononuclear Cu(II) complexes are prepared with bis-N,N'(salicylidene)-1.3-propanediamine and derivatives. After that, these mononuclear complexes are combined with mu-bridges, by the help of azide ... -
Thin-layer chromatographic specification and separation of cu1+, cu2+, ni2+, and co2+ cations
(Oxford Univ Press Inc, 2010)The M(PyDTC)2 (M: Cu, Co, or Ni) and CuPyDTC complexes, prepared by reactions of ammonium pyrrolidinedithiocarbamate with metal nitrates, are examined for qualitative analysis, speciation, and mutual separation using ... -
Substrate specificity, heat inactivation and inhibition of polyphenol oxidase from different aubergine cultivars
(Blackwell Publishing Ltd, 2002)The effects of substrate specificity, heat inactivation, temperature, pH and inhibitors on polyphenol oxidase (PPO) activity obtained from three different aubergine cultivars were investigated to identify the most appropriate ... -
Voltammetric determination of boron using poly xylenol orange-modified pencil graphite electrode
(Taylor & Francis Ltd, 2018)This study describes a new voltammetric method for sensitive and accurate determination of boron using the poly xylenol orange-modified and oxidized pencil graphite electrode. The oxidation of tiron at +0.86 V in the ... -
Preconcentration and determination of metal ions using fluorescein-modified silica gel and inductively coupled plasma-optical emission spectrometry
(Taylor & Francis Ltd, 2018)A new fluorescein modified silica gel was utilized for solid-phase extraction for the simultaneous and selective preconcentrations of Ba2+, Cd2+, Co2+, Cu2+, Mn2+, Ni2+, Pb2+, and Sr2+ prior todetermination by inductively ... -
Toxicities and risk assessment of heavy metals of the six most consumed fish from the Marmara Sea
(Springer Heidelberg, 2018)Bream, anchovy, horse mackerel, sea bass, sardine, and whiting that are commonly consumed by the Turkish community were collected from the Marmara Sea in September and March and were analyzed for trace elements and for fat ... -
Microwave metathesis synthesis and characterization of tmpo4 (tm = cr, mn, fe, co, ni, cu)
(Kaunas Univ Tech, 2018)The transition metal phosphates (TMPO4, M = Cr, Mn, Fe, Co, Ni, Cu) are synthesized via microwave metathesis synthesis (MMS) with by-product sodium chloride which drives the MMS reaction to forward direction by dint of ... -
Synthesis of new sulfonamide inhibitors of carbonic anhydrase
(Maik Nauka/Interperiodica, 2002)Four different derivatives of aromatic sulfonamides have been synthesized: 1,2-bis[(4-sulfonamidobenzamide)ethoxyl]ethane (SBAM), 1, 2-bis[(4-sulfonamidobenzoate)ethoxy]ethane,1,2-bis[(2,4-dichloro-5-sulfonamidobenzamide ... -
The removal of victoria blue from aqueous solution by adsorption on a low-cost material
(Kluwer Academic Publ, 2002)The use of perlite for the removal of victoria blue from aqueous solution at different concentration, ionic strength, pH and temperature has been investigated. Adsorption process is attained to the equilibrium within 1 h. ... -
Metal nanoparticles/carbon nanotube modified electrodes for voltammetric determination of boron
(Scientific Technical Research Council Turkey-TUBITAK, 2018)This study describes a sensitive and accurate voltammetric method for determination of boron using metal nanoparticles/carbon nanotube modified electrodes. The oxidation peak of Alizarin Red S (ARS) at -0.59 V in the ... -
Cycloaddition reactions of silacyclopropylidenoids to ethylene
(Acg Publications, 2018)The cycloaddition reactions of silacyclopropylidenoids (C2H4SiXLi, X = F, Cl, Br) to ethylene have been investigated separately to gain insights into halogen and solvation effects on the energetic of the proposed reactions ...
