Pentane pentanone pentanone

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Presentation transcript:

Pentane

3-pentanone

2-pentanone

Butylamine 73 30

MS Interpretation 1.Nominal M + - gives mass of ion 2.Exact m/z (high resolution) – get stoichiometry (each atom has exact mass) 3.Isotope Peaks –C+1 = 1.1%, O+2=.2% 4.Fragmentation – important with EI –What was lost? [(M-15) + - loss of CH 3 ]

McLafferty Rearrangement

Separations and Chromatography Chapters 26 – 28

Types of Separations Precipitation/filtration Distillation Extraction Ion exchange Chromatography Electrophoresis

Common properties exploited by separations Solubility Size Polarity Boiling point Electrical mobility

Chromatography – collection of methods that involve separation between 2 phases Mobile phase Stationary phase