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URL:https://www.learndesk.us/class/5343086307704832/lesson/13b789556c1a2ba367db4be58d866eff?ref=outlook-calendar
SUMMARY:UNIT 7
DTSTART;TZID=America/Los_Angeles:20260501T190000
DTEND;TZID=America/Los_Angeles:20260501T200000
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DESCRIPTION: Infrared (IR) spectroscopy is a technique which measures the vibrational modes of molecules in the infrared region to produce a structural fingerprint of the molecule. A light source is used to excite molecules, with the energy released following molecular vibrations detected by the spectrometer to produce IR spectra, such as that shown in figure 1. Consider a simple diatomic molecule, there is only one vibrational mode possible as the bond harmonically oscillates in length, stretching and compressing around its resting length. This action can be modelled like a spring, with the velocity of this oscillation influenced by the strength of the bond and the mass of the atoms. This is modelled in the two equations below, where v = wave number, k = force constant (a measure of bond strength) and m1 and m2 representing the masses of the atoms. In reality most molecules are larger, capable of more complex vibrations and produce overtones of the fundamental transition as energy increases,...

https://www.learndesk.us/class/5343086307704832/lesson/13b789556c1a2ba367db4be58d866eff?ref=outlook-calendar
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