Characterization and thermolysis reactions of CO{sub 2} bridged iron-tin and rhenium-tin complexes. Structure-reactivity correlations
- Univ. of Louisville, KY (United States)
We report here our studies of the thermolysis behavior of iron-tin complexes and related rhenium-tin complexes and new structural data which allow further correlations to be made between thermolysis activity and bonding parameters involving the CO{sub 2} ligand. All compounds have been characterized by solid-state IR spectral methods which allow a determination of the {mu}{sub 2}-{eta}{sup 2} or {mu}{sub 2}-{eta}{sup 3} bonding mode in each compound when compared with structural data on representative compounds of each type. Factors which control the ease of thermolysis and the mode of decomposition are the bonding type, the presence of electron-donating or electron-withdrawing groups on the tin atom as well as those on iron or rhenium, metal-carbon bond strength, the orientation of the bridging CO{sub 2} ligand between the two metal centers, and, most importantly, the stability of the corresponding metal (iron or rhenium) anion. Reaction mechanisms are proposed which are consistent with structural and electronic differences that lead to separate thermolysis paths. 17 refs., 7 figs., 11 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 28697
- Journal Information:
- Organometallics, Journal Name: Organometallics Journal Issue: 3 Vol. 14; ISSN 0276-7333; ISSN ORGND7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACTIVATION ENERGY
BOND ANGLE
BOND LENGTHS
CARBON DIOXIDE
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMICAL SHIFT
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
EXPERIMENTAL DATA
INFRARED SPECTRA
IRON COMPLEXES
MOLECULAR STRUCTURE
NMR SPECTRA
NUMERICAL DATA
ORGANOMETALLIC COMPOUNDS
RHENIUM COMPLEXES
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE
TIN COMPLEXES