Advanced Organic Chemistry: Mass spectrum of butan-2-ol (2-butanol)
Interpreting the mass spectrum of butan-2-ol (2-butanol, sec-butyl alcohol)
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 butan-2-ol
Interpreting the fragmentation pattern of the mass spectrum of butan-2-ol
[M]+ is the molecular ion peak (M) with an m/z of 74 corresponding to [C4H10O]+, the original butan-2-ol molecule minus an electron, [CH3CH(OH)CH2CH3]+.
You might see an even smaller M+1 peak at m/z 75, corresponding to an ionised butan-2-ol molecule with one 13C atom in it i.e. an ionised butan-2-ol molecule of formula [13C12C3H10O]+
The most abundant ion of the molecule under mass spectrometry investigation (butan-2-ol) is usually given an arbitrary abundance value of 100, called the base ion peak, and all other abundances ('intensities') are measured against it.
Identifying the species giving the most prominent peaks (apart from M) in the fragmentation pattern of butan-2-ol.
Unless otherwise indicated, assume the carbon atoms in butan-2-ol are the 12C isotope.
Some of the possible positive ions, [molecular fragment]+, formed in the mass spectrometry of butan-2-ol.
Key words & phrases: C4H10O CH3CH(OH)CH2CH3 image diagram on how to interpret and explain the mass spectrum of butan-2-ol m/z m/e base peaks, image and diagram of the mass spectrum of butan-2-ol, details of the mass spectroscopy of butan-2-ol, low and high resolution mass spectrum of butan-2-ol, prominent m/z peaks in the mass spectrum of butan-2-ol, comparative mass spectra of butan-2-ol, the molecular ion peak in the mass spectrum of butan-2-ol, analysing and understanding the fragmentation pattern of the mass spectrum of butan-2-ol, characteristic pattern of peaks in the mass spectrum of butan-2-ol, relative abundance of mass ion peaks in the mass spectrum of butan-2-ol, revising the mass spectrum of butan-2-ol, revision of mass spectroscopy of butan-2-ol, most abundant ions in the mass spectrum of butan-2-ol, how to construct the mass spectrum diagram for abundance of fragmentation ions in the mass spectrum of butan-2-ol, how to analyse the mass spectrum of butan-2-ol, how to describe explain the formation of fragmented ions in the mass spectra of butan-2-ol equations for explaining the formation of the positive ions in the fragmentation of the ionised molecule of butan-2-ol recognising the base ion peak of butan-2-ol interpreting interpretation the mass spectrum of butan-2-ol in sec-butyl alcohol CH3CH2CH(OH)CH3 2-butanol
Links associated with butan-2-ol
Doc Brown's Chemistry
Enter chemistry words e.g. topic, module, exam board, formula, compound, reaction, structure, concept, equation, 'phrase', homework question! anything of chemical interest!
TOP OF PAGE