Synthesis, Structure, and Solution Behavior of a Phosphine−Borane-Stabilized 1,3-Dicarbanion

The reaction between the phosphine−borane {(Me3Si)CH2}2P(BH3)Ph (2) and 2 equiv of n-BuLi in THF yields the 1,3-dicarbanion complex (THF)2Li{(Me3SiCH)2P(BH3)Ph}Li(THF)3 (3), which crystallizes as an unusual contact ion pair. In solution 3 is subject to dynamic exchange which interconverts the two li...

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Bibliographic Details
Published inOrganometallics Vol. 29; no. 21; pp. 4774 - 4777
Main Authors Izod, Keith, Wills, Corinne, Clegg, William, Harrington, Ross W
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 08.11.2010
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Inorganic & Nuclear
Chemistry, Organic
Physical Sciences
Science & Technology
REACTIVITY
CHEMISTRY
CARBANION
TRIS(TRIMETHYLSILYL)METHYLLITHIUM
CRYSTAL-STRUCTURE
ALKALI-METAL COMPLEXES
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Summary:The reaction between the phosphine−borane {(Me3Si)CH2}2P(BH3)Ph (2) and 2 equiv of n-BuLi in THF yields the 1,3-dicarbanion complex (THF)2Li{(Me3SiCH)2P(BH3)Ph}Li(THF)3 (3), which crystallizes as an unusual contact ion pair. In solution 3 is subject to dynamic exchange which interconverts the two lithium environments.
ISSN:0276-7333
1520-6041
DOI:10.1021/om100454t