A comparison between how far a compoent has moved compared to the solvent in TLC. Distance moved by component/distance moved by solvent
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Retention Time
Time taken for a component to travel from the inlet to the detector in gas chromatography. Can be compared to known values
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Qualitative Analysis
An obervable change and does not inolve observations using numerical values
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TMS
Also known as tetremethylsilane ((CH3)4Si) is an internal standard for carbon and proton NMR making a relative scale (chemical shift) with a value of 0ppm
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Chemical shift
The scale that compares the frequency of NMR absorption with the frequency of the reference peak of TMS
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Deuterium
An isotope of hydrogen that does not produce a signal in proton NMR (2H isotope also shown by the symbol D). Has a greater mass that 1H isotope so usually called heavy
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Equivalent Protons
Hydrogen atoms bonded to the same atoms that therefore, experience the same magnetic field in the NMR spectrometer
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Splitting Pattern
Some sigans are made from a cluster of peaks caused by spin-spin coupling of neighboring protons. The protons after the magentic field affectting the alingment of the proton and splitting the signal
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Number of peaks in a spiltting pattern (equation)
Different nubers of adjacent protons will cause a different number of splits. Number of protons on adjacent carbon atom+1 (n+1 rule)
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An adjacent atom
Within 4 bonds away (eg. max of three bonds away)
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Other cards in this set
Card 2
Front
Time taken for a component to travel from the inlet to the detector in gas chromatography. Can be compared to known values
Back
Retention Time
Card 3
Front
An obervable change and does not inolve observations using numerical values
Back
Card 4
Front
Also known as tetremethylsilane ((CH3)4Si) is an internal standard for carbon and proton NMR making a relative scale (chemical shift) with a value of 0ppm
Back
Card 5
Front
The scale that compares the frequency of NMR absorption with the frequency of the reference peak of TMS
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