Exam3_111110_version2

Diaryl 1250 1120 c h aldehyde stretch 2850 2750 co

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Unformatted text preview: d (ortho) 770-735 C-H bend (meta) ~880 & ~780 & ~690 C-H bend (para) 850-800 O-H stretch ~3650 or 3400-3300 C-O stretch 1260-1000 C-O-C stretch (dialkyl) 1300-1000 C-O-C stretch (diaryl) ~1250 & ~1120 C-H aldehyde stretch ~2850 & ~2750 C=O stretch ~1725 C=O stretch ~1715 C-C stretch 1300-1100 O-H stretch 3400-2400 C=O stretch 1690-1630 C-H bend (disubstituted - 1,1) ketones 3100-3010 C-H bend (disubstituted - E) aldehydes ~720 C-H in-plane bend ethers ~1375 C=C stretch (conjugated) alcohols CH3 bend C=C stretch (isolated) aromatics ~1465 =CH stretch alkynes 2950-2800 CH2 bend (4 or more) alkenes Wavenumber (cm-1) CH2 bend alkanes Molecular Motion C-H stretch Functional Group 1730-1700 http://www.chemistry.ccsu.edu/glagovich/teaching/316/ir/table.html 9 Page 1 of 3 Table of IR Absorptions Page carboxylic acids C=O stretch 11/2/11 2:04 PM Name:________________________________________________ 1730-1700 C-O stretch 1320-1210 O-H bend 1440-1400 C=O stretch 1750-1735 C-C(O)-C stretch (acetates) 1260-1230 C-C(O)-C stretch (all others) 1210-1160 C=O stretch 181...
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This document was uploaded on 01/26/2014.

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