Spektroskopie

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Interaktives Medium

Die Absorptionsspektroskopie kann genutzt werden, um den Verlauf einer chemischen Reaktion zu untersuchen. Hierzu wird das Differenzspektrum betrachtet. Diese Simulation hilft, den Zusammenhang zu den Spektren der einzelnen Analyten zu verstehen.

Geogebra

Video (190 Stunden)

If you were given a chemical and told to identify it, how would you go about doing that? You could look at different factors like color, boiling point, melting point, or smell, but the answer still might not be clear. Thankfully, today we have a more precise, higher-tech way of identifying chemicals called Nuclear Magnetic Resonance, or NMR. In this episode of Crash Course Organic Chemistry, we’ll look at how NMR allows us to visualize a molecule as a spectrum, and what the peaks on the spectrum tell us about the structure of the molecule. Episode Sources: Mahdi, J. G. (2010). Medicinal potential of willow: A chemical perspective of aspirin discovery. Journal of Saudi Chemical Society, 14(3), 317-322. Dempsey, D.A., Klessig, D.F. How does the multifaceted plant hormone salicylic acid combat disease in plants and are similar mechanisms utilized in humans?. BMC Biol 15, 23 (2017). https://doi.org/10.1186/s12915-017-0364-8 Still, W. C., Kahn, M., & Mitra, A. (1978). Rapid chromatographic technique for preparative separations with moderate resolution. The Journal of Organic Chemistry, 43(14), 2923-2925. Pastre, J. C., & Duarte Correia, C. R. (2006). Efficient Heck arylations of cyclic and acyclic acrylate derivatives using arenediazonium tetrafluoroborates. A new synthesis of the antidepressant drug (±)-Paroxetine. Organic letters, 8(8), 1657-1660. Series Sources: Brown, W. H., Iverson, B. L., Ansyln, E. V., Foote, C., Organic Chemistry; 8th ed.; Cengage Learning, Boston, 2018. Bruice, P. Y., Organic Chemistry, 7th ed.; Pearson Education, Inc., United States, 2014. Clayden, J., Greeves, N., Warren., S., Organic Chemistry, 2nd ed.; Oxford University Press, New York, 2012. Jones Jr., M.; Fleming, S. A., Organic Chemistry, 5th ed.; W. W. Norton & Company, New York, 2014. Klein., D., Organic Chemistry; 1st ed.; John Wiley & Sons, United States, 2012. Louden M., Organic Chemistry; 5th ed.; Roberts and Company Publishers, Colorado, 2009. McMurry, J., Organic Chemistry, 9th ed.; Cengage Learning, Boston, 2016. Smith, J. G., Organic chemistry; 6th ed.; McGraw-Hill Education, New York, 2020. Wade., L. G., Organic Chemistry; 8th ed.; Pearson Education, Inc., United States, 2013. *** Watch our videos and review your learning with the Crash Course App! Download here for Apple Devices: https://apple.co/3d4eyZo Download here for Android Devices: https://bit.ly/2SrDulJ Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Rene Duedam, Burt Humburg, Aziz, Nick, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Laura Damon, Andrei Krishkevich, Sam Ferguson, Eric Prestemon, Jirat, Brian Thomas Gossett, Ian Dundore, Jason A Saslow, Justin, Jessica Wode, Mark, Caleb Weeks __ Want to find Crash Course elsewhere on the internet? Facebook – http://www.facebook.com/YouTubeCrashCourse Twitter – http://www.twitter.com/TheCrashCourse Tumblr – http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids

Youtube

Video (191 Stunden)

Dieses Video erklärt die Grundlagen der C-13-NMR-Spektroskopie anhand magnetischer Momente.

Youtube

Video (25 Stunden)

We came across the personal spectroscope carried about by CV Raman – the inventor of Raman Spectroscopy. India Playlist: http://bit.ly/India_Videos OBJECTIVITY (new channel by Brady): http://bit.ly/Objectivity More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/

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Arbeitsblatt

Nicht bei jeder Lichtquelle werden alle Typen von sichtbarem Licht ausgestrahlt. Teilweise gibt es nur schmale und begrenzte “Banden”, die so typisch für ein Element sind, dass man sie zur Analyse verwenden kann. Mit Hilfe des Schalenmodells lassen sich diese speziellen Banden, Licht mit einer speziellen Wellenlänge, erklären.

Tutory

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Uploads from Philipp Wichtrup

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Quelle

Hier findest du ein Skript und didaktische Hinweise aus dem Fachbereich der Chemie der Universität Marburg zum Thema NMR-Spektroskopie. “Die Spektroskopie organischer Verbindungen, darunter die NMR-Spektroskopiem, ist Teil vieler Lehrpläne. Mangels NMR-Gerät kommen viele Schulen zu uns an die Uni, um dieses Thema hier zu bearbeiten.”