Identificação de Compostos Orgânicos via Espectroscopia IR - Exercícios Resolvidos

IR Exercise Match the following 10 compounds with the 10 spectra on the following pages Label the major diagnostic peaks on each spectrum to receive full credit 1butanol HOCH2CH2CH2CH3 acetophenone benzyl alcohol CH2OH ethyl acetate Nmethylcyclo NHCH3 1hexene CH2CHCH2CH2CH2CH3 hexylamine aniline NH2 pentane CH3CH2CH2CH2CH3 2pentanone H3CCCH2CH2CH3 butyraldehyde H3CH2CH2COH Reference Some IR Stretching Frequencies 34003250 cm1 NH 1 2 amines 16801640 cm1 CC alkenes 35003200 cm1 OH alcohols 16001585 cm1 CC aromatics 31003000 cm1 CH alkenes aromatics 15001400 cm1 CC aromatics 30002850 cm1 CH alkanes 13351250 cm1 CN aromatic amines 28302695 cm1 CH aldehydes 12501020 cm1 CN aliphatic amines 17501665 cm1 CO see discussion on back 13001050 cm1 CO alcohols esters Carbonyl Stretching Frequencies The exact position of the carbonyl band in the 17601665 cm1 range is determined by the constituents neighboring the carbonyl group Some examples are range type of carbonyl examples 17501735 cm1 saturated aliphatic esters