Search results for "UV–visible"

showing 3 items of 3 documents

DNA-binding of zinc(II) and nickel(II) salphen-like complexes extrapolated at 1 M salt concentration: Removing the ionic strength bias in physiologic…

2020

Abstract The DNA-binding of two salphen-like metal complexes of nickel(II) (1) and zinc(II) (2) was investigated in different ionic strength solutions by absorption spectroscopy. The data analysis allowed us to obtain the values of their extrapolated DNA-binding constant in physiological conditions, with DNA-binding strength in the order Ni > Zn, and to give relative weight to the electrostatic and non-electrostatic contributions to their DNA-interaction.

Absorption spectroscopyInorganic chemistryStatic ElectricitySalt (chemistry)chemistry.chemical_elementRelative weightZincPhenylenediaminesSodium Chloride010402 general chemistry01 natural sciencesBiochemistryInorganic ChemistryMetalchemistry.chemical_compoundIonic strengthCoordination ComplexesNickelSalphenchemistry.chemical_classification010405 organic chemistryChemistrySpectrum AnalysisOsmolar ConcentrationDNA0104 chemical sciencesNickelZincIonic strengthSettore CHIM/03 - Chimica Generale E Inorganicavisual_artvisual_art.visual_art_mediumUV–visible absorptionDNAJournal of Inorganic Biochemistry
researchProduct

Synthesis, spectroscopic, cyclic voltammetry properties and molecular structure of the thiocyanato-N meso-tetratolylporphyrinato zinc(II) ion complex

2017

International audience; This paper describes the synthesis of the (thiocyanato-N)(meso-tetratolylporphyrinato)zinc(II) chlorobenzene monosolvate complex with the formula [K(2,2,2-crypt)][Zn(TTP)(NCS)]·C6H5Cl (I) using the cryptand-222 to solubilize potassium thiocyanate in chlorobenzene solvent. Complex (I) has been characterized by elementary analysis, IR, UV–vis, 1H NMR and MS, and the structure of this new zinc(II) metalloporphyrin been examined crystallographically. A cyclic voltammetry investigation was also carried out on this species. The title compound crystallizes in the triclinic, space group P-1, with a = 11.5151(7) Å, b = 15.212(10) Å, c = 20.1093(12) Å, α = 80.428(4)°, β = 74.9…

Cyclic voltammetryInorganic chemistrychemistry.chemical_elementZincTriclinic crystal system010402 general chemistry010403 inorganic & nuclear chemistry01 natural sciences[ CHIM ] Chemical SciencesAnalytical ChemistryInorganic Chemistrychemistry.chemical_compoundPotassium thiocyanateUV–visible[CHIM]Chemical SciencesSpectroscopyOrganic ChemistryPorphyrinZinc porphyrin complex0104 chemical sciences3. Good healthX-ray diffractionCrystallographychemistryChlorobenzeneX-ray crystallographyProton NMRCyclic voltammetry
researchProduct

Equilibria involved in the diorganotin(IV) and triorganotin(IV) phosphomycin interaction in aqueous solution

2007

Four new diorganotin(IV), (R = Me, Bu), and triorganotin(IV), (R = Me, Ph), derivatives of the phosphomycin disodium salt antibiotic[(1R,2S)-1,2-epoxypropylphosphonate]Na2 have been synthesized and their solid state configuration studied by X-ray crystallography, FT-IR, Mossbauer, UV–Vis spectroscopies. The X-ray diffraction investigation, performed on the bis[trimethyltin(IV)]- phosphomycin, showed that the coordination geometry at all the Sn atoms is trigonal bipyramidal. The structure of the complex forms an unusual polymeric zig-zag planar network. The FT-IR and the 119Sn Mo¨ssbauer studies supported the formation of trigonal bipyramidal (Tbp) molecular structures, both in the diorganot…

chemistry.chemical_classificationAqueous solutionTrimethyltin(IV)LigandChemistryPotentiometric titrationInorganic chemistrySalt (chemistry)ISE-H+ potentiometric studyProtonationGeneral Chemistrydimethyltin(IV)Medicinal chemistryInorganic ChemistryFT-IRMossbauerX-rayOrganotinStability constants of complexesIonic strengthISE-H+ potentiometric study; UV–visible study; dimethyltin(IV); Trimethyltin(IV); phosphomycinUV–visible studyphosphomycinPotentiometric and spectrophotometric titrations
researchProduct