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Chapter 1: UV-Visible & Fluorescence Spectroscopy
1.1 UV-Visible Spectroscopy UV-Visible absorption spectroscopy involves measuring the absorbance of light by a compound as a function of wavelength in the UV-visible range. When a molecule absorbs a photon of UV-Vis light, the molecule is excited from its ground state to an electronic excited state. In other words, an electron is
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Chapter 1: NMR Coupling Constants - orgchemboulder.com
www.orgchemboulder.comChapter 1: NMR Coupling Constants 2 Figure 1-2: The NMR spectrum of 1,1-dichloroethane, collected in a 60 MHz instrument. For both A and B protons, the peaks are spaced by 0.1 ppm, equal to 6 Hz in this instrument. This time, the peak spacing is 0.1 ppm. This is equal to a J constant of (0.1 ppm • 60 MHz) = 6 Hz, the same as before.
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