Accession Number : ADA319564

Title :   Photochemistry of Fe2(CO)8(mu-CH2).

Descriptive Note : Master's thesis,

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

Personal Author(s) : Branan, Daniel M.

PDF Url : ADA319564

Report Date : DEC 1996

Pagination or Media Count : 73

Abstract : We herein present the previously unreported photochemistry of two forms of the dimetallocyclopropane complex Fe2(CO)8(mu-CH2), and its deuterated analog. We have determined that it behaves similarly to other dimetallic carbonyls in that it eliminates carbon monoxide upon irradiation with high-intensity UV/visible light to form distinct single and double CO-loss products. Upon formation of a 34-electron single CO-loss product, however, it exhibits the ability to either maintain an unbalanced 16/18-electron configuration, or convert to a carbene complex with an iron-iron double bond. This unusual behavior is possibly due to the high degree of pi-interaction between the mu-CH2 ligand and the dimetallic center. There is also evidence that a solvento compound is being formed which could explain both the stability of the single CO-loss product and the apparent formation of Fe(CO)5 within the low-temperature matrix.

Descriptors :   *PHOTOCHEMICAL REACTIONS, *IRON COMPOUNDS, METALS, COMPLEX COMPOUNDS, ULTRAVIOLET RADIATION, METHYL RADICALS, INTENSITY, LIGHT, CHEMICAL BONDS, DEUTERIUM, IRRADIATION, CARBON MONOXIDE, CYCLIC COMPOUNDS, PROPANE, CARBONYL COMPOUNDS, CARBENES.

Subject Categories : Radiation and Nuclear Chemistry
      Inorganic Chemistry
      Organic Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE