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):

Report Date:

1989-05-01

Pagination or Media Count:

146.0

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.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE