Newman - Note the C 1 and C 2 carbons have been condensed to"-CH 3" groups CH 3 CHCHCH 3 Looking down the C 1-C 2 bond a 2,3-dibromobutane

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CH 3 C 1 C 2 C 3 H H H CH 3 H H H H C 2 C 3 H CH 3 H H H C 1 H H H H C 1 C 2 C 3 C 4 H H H H H H Br Br H Br Br Draw the Newman projection that applies to the 3-D drawing and the prespective view given for the structures below. 1. CH 3 CHCH 3 2-methylpropane Looking down the C 1 -C 2 bond Br C 2 C 3 Br b) 2. H CH 3 H 3 C H b) Looking down the C 2 -C 3 bond Both conformations represent staggered conformations. Based on your Newman projections, which conformation, a or b, do you think is more stable?
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Unformatted text preview: Note: the C 1 and C 2 carbons have been condensed to "-CH 3 " groups CH 3 CHCHCH 3 Looking down the C 1-C 2 bond a) 2,3-dibromobutane Looking down the C 2-C 3 bond Which conformation of 2-methylpropane is of lower energy, a or b? a)...
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This note was uploaded on 09/03/2009 for the course CHEM 2250 taught by Professor Stack during the Spring '09 term at UNO.

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