ocr: At 2853 cm-l, the CH2 symmetric stretch absorbs. Normal range. 2853+10 cm-1. Use the Overlay menu to compare the spectrum of hexane, which has both CHa and CH2 groups, to cyclohexane, which has only CH2, and 2,3-dimethylbutane, which has no CH2 groups. To get a better view, expand the C-H stretching region.
