|| CH3CCH2CH2CH3

By examining the carbon NMR spectra of 1,1-dichlorocyclohexane and cis-1,2- dichlorocyclohexane, what TWO things would you look for to distinguish between the spectra. Use structures to explain your answer.

Saturated aldehyde Aromatic aldehyde At what position would you expect to observe IR absorption for the carbonyl groups in the following molecules? Infrared Absorptions of Some Aldehydes and Ketones. Carbonyl type Absorption cm-1 1730 1705 Example CH3CHO PhCHO a,ẞ-Unsaturated H2C=CHCHO 1705 aldehyde Saturated ketone CH3 COCH3 1715 Cyclohexanone 1715 Cyclopentanone 1750 Cyclobutanone Aromatic ketone 1785 PhCOCH3 a,ẞ-Unsaturated ketone H2C=CHCOCH3 1685 1690 Molecule #1: Molecule #2: CHO CHO CH3 cm-1 cm -1

Sketch the 1H NMR spectra of the following compounds.

A 13C NMR spectrum is shown for a molecule with the molecular formula of CsH11Cl. Draw the structure that best fits this data. 60 50 40 30 PPM 20 10 Q

Draw the organic structure of the compound and mark its peaks on the spectra

Deduce the structure of compound C.

ch1