Search results for "Undecagold"

showing 2 items of 2 documents

Induced Chirality in Confined Space on Halogen Gold Complexes

2015

The solubilization of HAuCl4 in toluene within optically active reverse micelles and lamellar structures formed by (1R,2S)-Dodecyl(2-hydroxy-1-methyl-2-phenylethyl)- dimethylammonium bromide (DMEB) has allowed us to evidence the complex phenomenology accompanying the confinement of Au salt within these nanostructures. Together with a chloride/bromide exchange process occurring in the first coordination sphere of an Au ion, UV−vis and electronic circular dichroism (ECD) spectra reveal the appearance of an induced dichroic signal attributable to Au complexes entrapped in the hydrophilic domain of the DMEB chiral nanostructures. Interestingly, change of the effective oxidation state and coordi…

Circular dichroismSupramolecular chiralityCoordination spherechirality confined space DMEBPhotochemistrySurfaces Coatings and FilmsElectronic Optical and Magnetic Materialschemistry.chemical_compoundGeneral EnergychemistryBromideRAY-ABSORPTION SPECTROSCOPY; BODY DISTRIBUTION-FUNCTIONS; NEAR-EDGE STRUCTURE; STABILIZED MICROEMULSIONS; SUPRAMOLECULAR CHIRALITY; CINCHONIDINE ADSORPTION; ELECTRONIC-STRUCTURES; CHIROPTICAL ACTIVITY; UNDECAGOLD CLUSTERS; CONDENSED MATTERPhysical and Theoretical ChemistryAbsorption (chemistry)SpectroscopyChirality (chemistry)Settore CHIM/02 - Chimica FisicaCoordination geometryThe Journal of Physical Chemistry C
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Protected but Accessible: Oxygen Activation by a Calixarene-Stabilized Undecagold Cluster

2013

DFT computations show that calixarenes stabilize subnanometer Au11 clusters allowing access of small molecules like O2 to reactive metal sites in the core. Maximum of three dioxygen molecules can bind to the cluster, and they are activated to a superoxo O2(-) state. This study predicts that gold clusters could act as viable oxidation catalysts at ambient conditions based on similar principles as the metal centers in enzymes.

inorganic chemicalsta214ta114ChemistryInorganic chemistrychemistry.chemical_elementGeneral ChemistryPhotochemistryBiochemistrySmall moleculeOxygenCatalysisCatalysisMetalColloid and Surface Chemistryvisual_artUndecagoldCalixarenevisual_art.visual_art_mediumCluster (physics)MoleculeJournal of the American Chemical Society
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