2-methyl-1-hexen-3-yne and 3-hexyn-2-one adventures in methyl group internal rotation
Stephens, Susanna L.
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https://hdl.handle.net/2142/100755
Description
Title
2-methyl-1-hexen-3-yne and 3-hexyn-2-one adventures in methyl group internal rotation
Author(s)
Stephens, Susanna L.
Contributor(s)
Cooke, S. A.
Novick, Stewart E.
Bohn, Robert Karl
Khanna, Zain
Issue Date
2018-06-22
Keyword(s)
Fundamental interest
Abstract
The two titled molecules have been studied in the past by one of us (RKB) and coworkers. Due to unassigned splittings of the methyl internal rotations, and inconsistencies in the spectroscopic fits the studies were deemed incomplete for a manuscript but were previously presented in isolation at ISMS in Columbus.a,b By re-measurement we have identified new small splittings and added breadth the spectral fits to allow improved fitting. Parameters characterizing internal rotation have been determined for 2-methyl-1-hexen-3-yne for the first time. This work is part of a larger series of work which attempts to rationalize how molecules undergo structural and dynamical changes when altering one moiety, for example how an environment surrounding a double bond hinders the free rotation of an adjacent methyl group.
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