During this experiment, you will test the effect of a variety of solvents on the rearrangement of a methoxy-spiropyran molecule:
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During this experiment, you will test the effect of a variety of solvents on the rearrangement of a

methoxy-spiropyran molecule: 8-methoxy-1',3'-dihydro-1',3',3'-trimethyl-6-nitrospiro[2H-1- benzopyran-2-2'-2H-indole] (shown above). As part of your pre-lab assignment, you should consider the questions below and record your answers in your laboratory notebook before coming to lab:

            

Hypothesize which of the following solvents will be the most effective in opening the SP ring: acetone, methanol, ethanol, or acetonitrile. Rank them in order from most effective (darkest color) to least effective (lightest color), and explain your prediction.

Top Answer

(SP) [ colourless] {light} to(MP) [ coloured ] { dark,} now high dielectric... View the full answer

New Doc 2020-02-12 02.47.16_2.jpg

Acetonitrile
dielectric Constant
36.5
methanol
33
Date
ethanol
25-5
Page
Acetone
21
NO g
a
methoxy Spiropyran [sp]
N.+
. NO g
methoxy _ merocyanine Mc)
coloured
high dielectric constant attraction...

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