Wavenumber (cm−1) | Assignment |
3585 | O?H stretching in acetic acid/CO2 gas |
3478 - 3373 | O?H stretching in water |
3000 [18] | CH3 asymmetric stretch in acetone |
2989, 2942 | C?H stretching in methyl |
2360 | CO2 gas |
1715 [19] | C=O stretching in acetone |
1722 [20] | C=O stretching in acetic acid |
1608 | C=O asymmetric stretching |
1620 | O-H in H2O, |
1613 [21] | Cu?H stretching in CH3-CuH− |
1580 - 1550 | C=O asymmetric stretching |
1573 [20] | O-H stretching in chemisorbed H2O |
1450 - 1430 | C=O symmetric stretching |
1375 (1362) [20] | C=O symmetric stretching |
1355 | C?H bending in methyl |
1243 [20] | C-OH stretching in acetic acid |
1203 [21] | CH3-Cu, CH3 deform |
1051 - 1033 | C?CH framework vibration |
944 | C?O stretching in acetic acid |
1012 [21] | CH3-CuH, CH3 deform |
668 - 682 | CO2 gas |
648 [21] | CH3-Cu, CH3 rock |