INFRARED SPECTROSCOPY Flashcards
What happens in infrared spectroscopy? (2)
a beam of infrared radiation is passed through a sample of a chemical, the radiation is absorbed by the covalent bonds in the molecules, increasing their vibrational energy. these bonds absorb different frequencies of IR radiation.
what is the N-H bond known as and where is it found? (2)
is known as the amine bond and is found in amines
what is the O-H bond known as and where is it found? (2)
is known as the alcohol bond and is found in alcohols
where is the C-H bond found? (1)
most organic molecules
what is the O-H bond known as and where is it found? (2)
can be known as alcohols or acids and the acid bond is found in carboxylic acids
where is the C(triple bond)N found? (1)
nitriles
where is the C=O bond found? (4)
aldehydes, ketones, carboxylic acids and esters
where is the C=C bond found? (1)
alkenes
where is the C-O bond found? (2)
alcohols, carboxylic acids
where is the C-C bond found? (1)
most organic molecules
what is the wavenumber of the N-H bond? (1)
3300-3500
what is the wavenumber of the O-H bond (alcohols)? (1)
3230-3550
what is the wavenumber of the C-H bond? (1)
2850-3300
what is the wavenumber of the O-H bond (acids)? (1)
2500-3000
what is the wavenumber of the C(triple bond)H bond? (1)
2220-2260
