01770nam a22002057a 4500 20231027115401.0 231027b ||||| |||| 00| 0 eng d 0021-9584 Shaner, Sarah E. Determination of Stretching Frequencies by Isotopic Substitution Using Infrared Spectroscopy : An Upper-Level Undergraduate Experiment for an In-Person or Online Laboratory (Journal Article) Washington DC :American Chemical Society ,2023 2347-2352p. Journal of Chemical Society , Volume 100: Number 6, June 2023 ***______{For Hard Copy, Please visit Library.}________*** Abstract:A Fourier transform infrared (FTIR) experiment appropriate for an upper-level undergraduate laboratory such as chemical instrumentation is described. Students collect FTIR spectra of four protio-solvents and their deuterated analogues. In addition to qualitatively observing C–H and O–H peaks shift to lower energy upon deuteration, students apply a simple harmonic oscillator model to predict the magnitude of the shifts and gain an understanding of the relationship between reduced mass and vibrational frequencies. Vibrational calculations are then performed to corroborate the experimental results and allow students to visualize the normal modes involved via animations of the vibrations. This experiment is suitable to be used as either an in-person or online laboratory. Analytical Chemistry | Laboratory Instruction| Computer-Based Learning| Hands-On Learning| Computational Chemistry | IR Spectroscopy| Isotopes| Spectroscopy| COVID-19 Stone, Kari L. https://pubs.acs.org/doi/10.1021/acs.jchemed.2c00905 PER 0 0 0 0 RIEBPL RIEBPL 2023-10-27 0 2023-10-27 00:00:00 2023-10-27 PER 44618 44617