NMR study of 2-ethylhexyllithium aggregate and 2- ethylhexyllithium/lithium 2-ethyl-1-hexoxide mixed aggregates.

A 1H, 13C, and 6Li NMR study of 2-ethylhexyllithium showed that 2- ethylhexyllithium exists solely as a hexamer in cyclopentane solution over the temperature range from 25 to -65 °C. Furthermore, 2-ethylhexyllithium and lithium 2- ethyl-1-hexoxide were shown to form mixed aggregates when the alkoxide was formed in situ by reacting 2-ethylhexyllithium with 2-ethyl-1-hexanol. A multinuclear, variable temperature NMR study of a sample with an O:Li ratio of 0.2 led to the identification of at least four such aggregates, one of which was found to be a hexamer with the composition R5(RO)Li6. Studies of samples with higher O:Li ratios, up to 0.8, showed additional mixed aggregates present. All solutions containing mixed aggregates were also shown to contain hydrocarbon soluble lithium hydride. A study of lithium 2-ethyl-1- hexoxide indicated that it aggregates in solution as well.

Grantor dc:publisher

University of North Texas

Year dc:date

2001

Author dc:creator

• Petros, Robby A.

Contributors dc:contributor

• Thomas, Ruthanne D.
• Kelber, Jeffry A.

• Organolithium compounds.
• hexamer
• Alkyllithium compounds
• 2- ethylhexyllithium
• lithium 2-ethyl-1- hexoxide

Statement dc:rights

• Public
• Copyright
• Petros, Robby A.
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 51988585
https://digital.library.unt.edu/ark:/67531/metadc3037/
ark: ark:/67531/metadc3037

OAI identifier oai:identifier

info:ark/67531/metadc3037