Solutions_Manual_for_Organic_Chemistry_6th_Ed 337

Solutions_Manual_for_Organic_Chemistry_6th_Ed 337 - 15-27 c...

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Unformatted text preview: 15-27 c ontinued ( e) (f) { �H2_ & (!=.yO: H ( g) V __ (C yO: HC � H 15-28 ( a) A = Ee l E= - A cl 0.00 10 g x l = 1 cm 1 m ole A = 0.74 = c onvert mass to moles: 255 g 3 .9 x 10-6 m oles c= E 3.9 x 10-6 m oles 100mL 0.74 x 1000mL lL = 3.9 x 10-5 M = '" ( 3 .9 x 10-5 ) ( 1 ) ( b) Thi s large value of E c ould only come from a conj ugated system, eliminating the first structure. The absorption maximum at 2 35 n m is most l i kely a diene rather than a triene. The most reasonable structure is: compare with: El S olved Problem 15-3 330 "max = 2 35 n m co T able 15-2 "max = 232 n m ...
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This note was uploaded on 02/27/2010 for the course CHEM 140 taught by Professor Wade during the Spring '10 term at Whitman.

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