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Mixed Ligand Complexes (mixed + ligand_complex)
Selected AbstractsDetermination of Ytterbium Traces by Cathodic Stripping VoltammetryELECTROANALYSIS, Issue 1 2003Marina Mlakar Abstract The method of ytterbium(III) trace concentration in the presence of 2-thenoyltrifluoroacetone (TTA) and polyethyleneglycol (PEG) in ammonium chloride is described. The adsorption was performed at the HMDE at ,1.0,V using linear scan voltammetry and square-wave voltammetry. The relationship between properties of the SW response of the mixed ligand complex and parameters of a charge transfer were analyzed using theoretical data of SW redox processes. [source] Synthesis and biodistribution in mice of 99mTcN,DBODC,DMSEtJOURNAL OF LABELLED COMPOUNDS AND RADIOPHARMACEUTICALS, Issue 3 2009Shuye Yang Abstract Nitrido technetium(V)-mixed ligand complex of 99mTcN,DBODC,DMSEt [DMSEt: Monoethyl ester of (meso) 2,3-dimercaptosuccinic acid, DBODC: bis(2-ethoxyethyl)carbamodithioate] has been prepared in a two-step procedure by first reaction of 99mTcO with succinic dihydrazede in the presence of stannous chloride as a reducing agent and propylenediamine tetraacetic acid as a complexant, followed by the addition of DMSEt and DBODC. The complex was stable over 6,h at room temperature. The partition coefficient indicated that it was a hydrophilic complex. Biodistribution in mice demonstrated that the complex accumulated mainly in liver, lungs and kidneys. Copyright © 2009 John Wiley & Sons, Ltd. [source] Synthesis of hydroxyl silylated rhenium and (99mTc)technetium ,3+1' mixed ligand complexesJOURNAL OF LABELLED COMPOUNDS AND RADIOPHARMACEUTICALS, Issue 8 2002Torsten Kniess Abstract The synthesis of hydroxyl silylated thiols as monodentate ligands is described. These monodentates were used to build with Re and 99mTc trimethyl-, triethyl- and triphenyl-silylated ,3+1' mixed ligand complexes, using 3thiapentane-1,5-dithiol as co-ligand. The Re complexes were characterized by 1H NMR and elemental analysis, the 99mTc complexes were detected by radio HPLC. While the trimethyl silylated derivatives hydrolysed in aqueous media, the triethyl- and triphenyl silylated complexes have proved to be stable in neutral solutions. Copyright © 2002 John Wiley & Sons, Ltd. [source] Antibacterial, spectral and thermal aspects of drug based-Cu(II) mixed ligand complexesAPPLIED ORGANOMETALLIC CHEMISTRY, Issue 10 2009G. J. Kharadi Abstract The antibiotic agent clioquinol is well known for its drug design and coordinating ability towards metal ions. Copper(II) mixed-ligand complexes of clioquinol with various uninegative bidentate ligands were prepared. The structure of the synthesized complexes was characterized using elemental analyses, infrared spectra, 1H-NMR spectra, electronic spectra, magnetic measurements, FAB mass spectrum and thermo gravimetric analyses. The kinetic parameters such as order of reaction (n) and the energy of activation (Ea) are reported using the Freeman,Carroll method. The pre-exponential factor (A), the activation entropy (,S#), the activation enthalpy (,H#) and the free energy of activation (,G#) were calculated. Complexes were also screened for their in vitro antibacterial activity against a range of Gram-positive and Gram-negative bacteria in order to set the precursors for anti-tumourigenic agent. Copyright © 2009 John Wiley & Sons, Ltd. [source] | ||||||||||