Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 46, Pages 15177-15188Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b08177
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Funding
- NSF [1058051]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1058051] Funding Source: National Science Foundation
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A metastable, polymorphic hexameric crystal structure of lithium pinacolone enolate (LiOPin) is reported along with three preparation methods. NMR-based structural characterization implies that the lithium pinacolate hexamer deaggregates to a tetramer in toluene but retains mainly the hexameric structure in nonaromatic hydrocarbon solvents such as cyclohexane. Moreover, the presence of a small amount of lithium aldolate (LiOA) dramatically influences the aggregation state of LiOPin by forming a mixed aggregate with a 3:1 ratio (LiOPin(3)center dot LiOA).
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