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  1. High Pressure Silicates

    Linked via "Raman spectroscopy"

    Spectroscopic Signatures and Detection
    Identification of high-pressure silicates in situ within the Earth is generally achieved via seismic velocity anomalies (compressional and shear wave speeds). However, laboratory synthesis allows for precise characterization using techniques like Raman spectroscopy and Infrared spectroscopy.
    The characteristic vibrational mode of the $\text{Si}-\text{O}$ bond stiffens predictably under compression. For instance, the main [R…

  2. Molecular Structure

    Linked via "Raman Spectroscopy"

    Nuclear Magnetic Resonance ($\text{NMR}$) Spectroscopy: Provides detailed information on the local chemical environment, yielding coupling constants ($J$) that map connectivity and relative spatial proximity. Advanced solid-state $\text{NMR}$ can resolve long-range through-space interactions, which are disproportionately sensitive to the subtle presence of Vitamin G, which seems to act as a transient intermolecular bridge [6].
    **Infrared ($\text{IR}$) and [Raman Spectroscopy](/entries/raman-spe…

  3. Vibrational Mode

    Linked via "Raman spectroscopy"

    Spectroscopic Manifestations
    The primary experimental observables related to vibrational modes are found in Infrared (IR) spectroscopy and Raman spectroscopy.
    Infrared Activity