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Advanced Organic Chemistry: Mass spectrum of ethane
See also comparing the infrared, mass, 1H NMR and 13C NMR spectra of ethane and ethene
Interpreting the mass spectrum of ethane 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 ethane See also comparing the infrared, mass, 1H NMR and 13C NMR spectra of ethane and ethene
The alkane
ethane
Interpreting the fragmentation pattern of the mass spectrum of ethane [M]+ is the molecular ion peak (M) with an m/z of 30 corresponding to [C2H6]+, the original ethane molecule minus an electron, [CH3CH3]+. The small M+1 peak at m/z 31, corresponds to an ionised ethane molecule with one 13C atom in it i.e. an ionised ethane molecule of formula [13C12CH6]+
The most abundant ion of the molecule under mass spectrometry investigation (ethane) 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 ethane. Unless otherwise indicated, assume the carbon atoms in ethane are the 12C isotope. Some of the possible positive ions, [molecular fragment]+, formed in the mass spectrometry of ethane.
Key words & phrases: C2H6 CH3CH3 image diagram on how to interpret and explain the mass spectrum of ethane m/z m/e base peaks, image and diagram of the mass spectrum of ethane, details of the mass spectroscopy of ethane, low and high resolution mass spectrum of ethane, prominent m/z peaks in the mass spectrum of ethane, comparative mass spectra of ethane, the molecular ion peak in the mass spectrum of ethane, analysing and understanding the fragmentation pattern of the mass spectrum of ethane, characteristic pattern of peaks in the mass spectrum of ethane, relative abundance of mass ion peaks in the mass spectrum of ethane, revising the mass spectrum of ethane, revision of mass spectroscopy of ethane, most abundant ions in the mass spectrum of ethane, how to construct the mass spectrum diagram for abundance of fragmentation ions in the mass spectrum of ethane, how to analyse the mass spectrum of ethane, how to describe explain the formation of fragmented ions in the mass spectra of ethane equations for explaining the formation of the positive ions in the fragmentation of the ionised molecule of ethane recognising the base ion peak of ethane interpreting interpretation the mass spectrum of ethane formula alkane functional group Links associated with ethane
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