Advanced Organic Chemistry: Mass spectrum of propanal
The mass spectrum of propanal (propionaldehyde)
Doc Brown's Chemistry Advanced Level Pre-University Chemistry Revision Study Notes for UK IB KS5 A/AS GCE advanced A level organic chemistry students US K12 grade 11 grade 12 organic chemistry courses involving molecular spectroscopy analysing mass spectra of propanal
propanal (propionaldehyde), C3H6O, , , ,
Interpreting the fragmentation pattern of the mass spectrum of propanal (propionaldehyde)
[M]+ is the molecular ion peak (M) with an m/z of 58 corresponding to [C3H6O]+, the original propanal molecule minus an electron, [CH3CH2CHO]+.
The small M+1 peak at m/z 59, corresponds to an ionised propanal molecule with one 13C atom in it i.e. an ionised propanal molecule of formula 13C12C2H6O
Identifying the species giving the most prominent peaks (apart from M) in the fragmentation pattern of propanal.
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Stick diagram of the relative abundance of ionised fragments in the fingerprint pattern of the mass spectrum of propanal. Table of the m/e m/z values and formula of the ionised fragments in the mass spectrum of propanal. The m/e m/z value of the molecular ion peak in the mass spectrum of propanal. The m/e m/z value of the base ion peak in the mass spectrum of propanal. Possible examples of equations showing the formation of the ionised fragments in propanal. Revision notes on the mass spectrum of propanal. Matching and deducing the structure of the propanal molecule from its mass spectrum.
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