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KMID : 1024519940030040439
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Journal of the Environmental Sciences
1994 Volume.3 No. 4 p.439 ~ p.443
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Catalysis Reaction for the Formation of Hydrogen Cyanide from Metal Complex
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Park Heung-Jai
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Abstract
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In aqueous acid solution aquates via a series of stepwise stereospecific reactions to give as the final product.Some of the intermediate cyanoaquo complexes in the sequence have been isolated.These complexes aquate by both acid independent and acid denpendent pathways, the latter involving protonation of the cyano ligands followed by aquation of the singly protonated species. The kinetic data for the aquation of are consistent with the transition state structure . Addition of to solutions of cyanocobalt(III) complexes produces the metastable intermediate This isomerizes to in a -catalyzed reaction which occurs by a ligand-bridged electron-change mechnism. From acid catalysis on these aquation reactions, it product HCN. Especially, -ions do the role of catalyst in the formation of HCN from
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KEYWORD
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Cyanoaquo complexes, HCN
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