Search results for "Azacrown"

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Equilibrium and kinetics studies on bibrachial lariat aza-crown/Cu(II) systems reveal different behavior associated with small changes in the structu…

2014

Abstract The high-yield synthesis of a new bibrachial lariat azacrown constituted by two tris(2-aminoethyl)amine (tren) units functionalized in one of its arms with a 4-methylquinoline group linked by dimethylene pyridine spacers (L2) is reported for the first time. The speciation studies show formation of mono- and binuclear Cu2+ complexes of similar stability. Comparisons are established with the complexes formed by the precursor tren-quinoline derivative (L4) and with the previously reported ligands containing naphthalene instead of quinoline as the fluorophore (L1, L3). The kinetics of formation and decomposition of Cu2+ complexes with L1 and L2 has been studied. For L1, the acid-promot…

LigandMetal ions in aqueous solutionQuinolineKineticsPhotochemistrySquare pyramidal molecular geometryInorganic ChemistryKineticsCrystallographychemistry.chemical_compoundTrigonal bipyramidal molecular geometryCopper(II)MacrocyclechemistryCoordination geometryPyridineMaterials ChemistryPotentiometric equilibrium studiesPhysical and Theoretical ChemistryAzacrownCoordination geometryInorganica Chimica Acta
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CCDC 1524052: Experimental Crystal Structure Determination

2017

UDAKOC : diaqua-(μ-1,13-dioxa-4,7,10,16,19,22-hexaazacyclotetracosane)-bis(perchlorato)-di-copper(ii) diperchlorate tetrahydrate Space Group: P21/c, Cell: a 11.8763(3)Å b 13.9146(4)Å c 13.4024(4)Å, α 90.00° β 123.439(2)° γ 90.00° Work published 2017 via Cambridge Crystallographic Data Centre.

azacrownmacrocycleazacorandsupramolecular chemistrycopper complex
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