Chemistry Homework Solutions
Problem
#25282

A little confused

I have already tried this problem and offered an explanation of why I think it should be.  Please help me and if wrong could you offer some help or an explanation.

Attached file(s):
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Organic.doc  View File

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Organic.doc
(Be sure to give an explanation for your answer) Arrange the following
in decreasing order of wavelengths of absorption in the ultraviolet
spectrum.

2-phenyl-1,3,5-hexatriene

1-phenyl-1,3,5-hexatriene

3-phenyl-1,3,5-hexatriene

Biphenyl

I think that the order will go (c), (a), (b) and then (d). I think that
is goes in this order because the shorter the and less the conjugated
double bonds become the lower the wavelength becomes. Therefore
3-phenyl-1,3,5-hexatriene has the most conjugated double bonds and will
absorb the greatest amount of UV and Biphenyl has the least number of
conjugated double bonds.
Solution
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