ORGLIST: IR Problem

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From: Ashutosh (ashujo$##$yahoo.com)
Date: Tue Feb 27 2001 - 04:07:56 EST


Hello
there's a problem in IR spectroscopy i am finding confusing

a compound shows IR bands at 1620, 990 and 910 reciprocal cm.
its molecular formula is C3H6O
find its structure

now,
the band at 1620 refers to alkene C=C
the bands at 990 and 910 refer to monosubstituted ethylene.
my problem is;where does the oxygen fit in?there is no C=O.so the =
closest bet is an ether.
but ethers show C-O stretching frequency at 1000-1300 reciprocal cm.
so what could be the structure?

thanks
Ashutosh


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