Accession Number : ADA217957


Title :   Ligand-Centered Electron-Transfer Redox Processes for Manganese, Iron, and Cobalt Complexes in Relation to Selected Catalytic Systems


Descriptive Note : Doctoral thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH


Personal Author(s) : Richert, Silvia A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a217957.pdf


Report Date : May 1989


Pagination or Media Count : 146


Abstract : The oxidation potentials for a series of Manganese L3, Iron L3 and Cobalt L3 complexes( L = acetylacetonate, 8-quinolinolate, picolinate, 2,2'- bipyridine, and 1,10-phenanthroline have been determined by cyclic voltammetry. The oxidations of these complexes occur at substantially less positive potentials than those for their zinc analogues and care clearly ligand-centered. The removal of an electron from the valence shell of the ligand is facilitated by the formation of a metal (d-electron)-ligand (p-electron) covalent bond. Other hydrocarbon substrates are transformed to ketones via the oxygenation of a methylenic carbon. Acetylenes and arylolefins are dioxygenated to alpha- dicarbonyls and aldehydes. A micron-dioxygen binuclear iron picolinate intermediate appears to be the active form of the catalyst. Keywords: Oxidation reduction reactions; Electrical measurement; Measurement.


Descriptors :   *LIGANDS , *MANGANESE , *IRON , *COBALT , *OXIDATION REDUCTION REACTIONS , ELECTRONS , OXIDATION , HYDROCARBONS , CATALYSTS , VALENCE , CATALYSIS , VOLTAMMETRY , ELECTRICAL MEASUREMENT , ALDEHYDES , KETONES , POTENTIAL THEORY , CYCLES , CARBON , SHELLS(STRUCTURAL FORMS) , ACETYLENES , COVALENT BONDS , SUBSTRATES


Subject Categories : Organic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE