Advanced Organic Chemistry: Mass spectrum of 1,1-dibromoethane
The mass spectrum of 1,1-dibromoethane
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 1,1-dibromoethane
1,1-dibromoethane, C2H4Br2, CH3CHBr2
Interpreting the fragmentation pattern of the mass spectrum of 1,1-dibromoethane
[M]+ are the molecular ion peaks (M) with m/z values of 186, 188 and 190 corresponding to [C2H4Br2]+, the original 1,1-dibromoethane molecule minus an electron.
The very tiny M+1 peaks at m/z 187 and 189, corresponds to an ionised 1,1-dibromoethane molecule with one 13C atom in it i.e. an ionised 1,1-dibromoethane molecule of formula [13C12CH4Br2]+
The most abundant ion of the molecule under mass spectrometry investigation (1,1-dibromoethane) 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 1,1-dibromoethane.
Unless otherwise indicated, assume the carbon atoms in 1,1-dibromoethane are the 12C isotope.
Key words & phrases: C2H4Br2 CH3CHBr2 image diagram on how to interpret and explain the mass spectrum of 1,1-dibromoethane m/z m/e base peaks, image and diagram of the mass spectrum of 1,1-dibromoethane, details of the mass spectroscopy of 1,1-dibromoethane, low and high resolution mass spectrum of 1,1-dibromoethane, prominent m/z peaks in the mass spectrum of 1,1-dibromoethane, comparative mass spectra of 1,1-dibromoethane, the molecular ion peak in the mass spectrum of 1,1-dibromoethane, analysing and understanding the fragmentation pattern of the mass spectrum of 1,1-dibromoethane, characteristic pattern of peaks in the mass spectrum of 1,1-dibromoethane, relative abundance of mass ion peaks in the mass spectrum of 1,1-dibromoethane, revising the mass spectrum of 1,1-dibromoethane, revision of mass spectroscopy of 1,1-dibromoethane, most abundant ions in the mass spectrum of 1,1-dibromoethane, how to construct the mass spectrum diagram for abundance of fragmentation ions in the mass spectrum of 1,1-dibromoethane, how to analyse the mass spectrum of 1,1-dibromoethane, how to describe explain the formation of fragmented ions in the mass spectra of 1,1-dibromoethane equations for explaining the formation of the positive ions in the fragmentation of the ionised molecule of 1,1-dibromoethane recognising the base ion peak of 1,1-dibromoethane interpreting interpretation the mass spectrum of 1,1-dibromoethane
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