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Spectroscopy Handout - UV/Vis Spectroscopy E π h ν = ∆...

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Molecular Spectroscopy
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Molecular States Nuclear Magnetic Resonance Molecular Vibration Electronic Transitions (orbital) Molecular Rotation Electron Spin Resonance
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Nuclear Magnetic Resonance (NMR) E = h ν 1 H, 13 C, 19 F ↑ → Nucleus has nuclear moment "spin" ~ 400 MHz
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1 H-NMR Spectrum Chemical Shift, δ is a measure of E
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Infrared Spectroscopy, IR vibrational states quantized
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Infrared Spectroscopy, IR
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Unformatted text preview: UV/Vis Spectroscopy E π * h ν = ∆ E E π UV/Vis Spectroscopy absorption spectra reflects green E π * Chlorophyll a (red) Chlorophyll b (blue) h ν = ∆ E E π λ max indicative of the extent of conjugation E π * E π ∆ E decreases ( λ max increases) as the extent of conjugation increases. λ max 217 nm 258 nm 290 nm...
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  • Summer '10
  • atsumi
  • Nuclear magnetic resonance, Molecular Spectroscopy, Nuclear Magnetic Resonance Molecular Rotation Molecular Vibration

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