Studies of metal ammonia interactions with aromatic substrates
Dissolving metal reduction and reductive alkylation reactions are important to coal chemistry, since they promote the solubilization and depolymerization of coal. Solubilization is important to liquefaction, as well as to the characterization of coal structure, since the soluble fractions can be analyzed spectroscopically. This research program has focussed on a better understanding of the reduction pathway using polynuclear aromatics (PAs) as model compounds. Accomplishments in the last three years include reduction studies of polynuclear aromatics separated by (1) inactive spacers (methylene groups), or (2) active spacers (benzene rings). In the first category, we studied the reduction of dinaphthylethanes in ether and ammonia solvents, and have learned that cleavage of the ethane bridge only occurs at higher temperatures regardless of solvent. In the second case, we investigated a number of dinaphthylbenzenes and found that, unlike the related terphenyls, these compounds show no propensity for inner ring reduction. A second area of research is concerned with the conformational analysis of hydroaromatic compounds. We have concluded two studies providing structural information about 9,10-dihydroanthracenes using nuclear magnetic resonance and theoretical calculations. Additional studies not yet concluded involve anion structure on mono- and dianions derived from PAs. This includes preferred conformations, ion triplets and solvation. 4 refs.
- Research Organization:
- Indiana Univ.-Purdue Univ., Indianapolis, IN (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- FG02-85ER13327
- OSTI ID:
- 6223792
- Report Number(s):
- DOE/ER/13327-T2; ON: DE91008146
- Country of Publication:
- United States
- Language:
- English
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Studies of metal ammonia interactions with aromatic substrates. Progress report, January 1, 1982-December 31, 1984
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Related Subjects
400102* -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
ALKALI METALS
ALKANES
AMMONIA
ANTHRACENE
AROMATICS
BENZENE
CARBONACEOUS MATERIALS
CHEMICAL BONDS
CHEMICAL REACTIONS
CLEAVAGE
COAL
CONDENSED AROMATICS
CONFORMATIONAL CHANGES
CRYSTAL STRUCTURE
DECOMPOSITION
DEPOLYMERIZATION
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
ETHANE
FOSSIL FUELS
FUELS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
MAGNETIC RESONANCE
MATERIALS
METALS
MICROSTRUCTURE
MOLECULAR STRUCTURE
NAPHTHALENE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
POLYCYCLIC AROMATIC HYDROCARBONS
POLYPHENYLS
PROGRESS REPORT
REDUCTION
RESONANCE
SOLUBILITY
SOLVENTS
TERPHENYLS