1. Conformational Polymorphism of Lithium Pinacolone Enolate.
- Author
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Jie Guang, Qiyong Liu, Hopson, Russell, Kagan, Gerald, Weibin Li, Monroe, Thomas B., and Williard, Paul G.
- Subjects
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CRYSTALS , *POLYMORPHIC transformations , *CRYSTALLOGRAPHY , *LITHIUM compounds , *HYDROCARBONS , *CLUSTERING of particles - Abstract
Article 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 (LiOPin3⋅LiOA). [ABSTRACT FROM AUTHOR]
- Published
- 2016
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