The reactions of free gold clusters Au-, Au2-, and Au3- with carbon monoxide are studied in an rf-octopole ion trap expt. at cryogenic temps. While Au- is unreactive toward CO over the whole temp. range investigated, the two and three atom cluster anions show a max. adsorption of two CO mols. at temps. below 250 K. From time resolved trapping expts. the strongly cluster size dependent reaction kinetics are obtained and a distinct reaction mechanism is deduced. The size dependence of the measured rate coeffs. reveals the preferred formation and particular stability of the carbonyl complex Au3(CO)2-. Through RRK anal. of the abs. termol. rate coeffs. we are able to est. the binding energy of CO to Au2- and Au3-. [on SciFinder(R)]     «

The reactions of free gold clusters Au-, Au2-, and Au3- with carbon monoxide are studied in an rf-octopole ion trap expt. at cryogenic temps. While Au- is unreactive toward CO over the whole temp. range investigated, the two and three atom cluster anions show a max. adsorption of two CO mols. at temps. below 250 K. From time resolved trapping expts. the strongly cluster size dependent reaction kinetics are obtained and a distinct reaction mechanism is deduced. The size dependence of the measured...     »

Carbonyl complexes Role: CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), FORM (Formation, nonpreparative), PROC (Process) (Au3- complexes size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom and carbonyl complex stability) Ion-molecule reaction (mechanism size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom and carbonyl complex stability) Adsorption Binding energy Cluster ions Ion-molecule reaction kinetics (size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom and carbonyl complex stability) Cluster compounds Role: CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), FORM (Formation, nonpreparative), PROC (Process) (size dependent reaction kinetics of small gold clusters w size dependent reaction kinetics small gold cluster carbon monoxide anion gold cluster size dependent reaction kinetics carbon monoxide     «

Carbonyl complexes Role: CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), FORM (Formation, nonpreparative), PROC (Process) (Au3- complexes size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom and carbonyl complex stability) Ion-molecule reaction (mechanism size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of interna...     »

CAN 139:266371 67-3 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut fuer Experimentalphysik, Freie Universitaet Berlin, Berlin, Germany. Journal 1434-6060 7440-57-5D (Gold) Role: CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), FORM (Formation, nonpreparative), PROC (Process) (size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom and carbonyl complex stability); 630-08-0 (Carbon monoxide); 19498-55-6 (Gold(1-)); 66525-34-6; 124053-54-9 Role: CPS (Chemical process), PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom and carbonyl complex stability)     «

CAN 139:266371 67-3 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut fuer Experimentalphysik, Freie Universitaet Berlin, Berlin, Germany. Journal 1434-6060 7440-57-5D (Gold) Role: CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), FORM (Formation, nonpreparative), PROC (Process) (size dependent reaction kinetics of small gold clusters with carbon monoxide and influence of internal degrees of freedom an...     »