The course introduces the three key spectroscopic methods used by chemists and biochemists to analyse the molecular and electronic structure of atoms and molecules. These are UV/Visible , Infra-red (IR) and Nuclear Magnetic Resonance (NMR) spectroscopies. The content is presented using short focussed and interactive screencast presentations accompanied by formative quizzes to probe understanding of the key concepts presented. Numerous exercises are provided to facilitate mastery of each topic. A unique virtual spectroscopic laboratory is made available to enable students to measure and analyse spectra online. Assessment is via summative quizzes completed during the course period.
Introduction to Molecular Spectroscopy
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Introduction to Molecular Spectroscopy
Instructor: Patrick J O'Malley, D.Sc
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4.7
(2,587 reviews)
Intermediate level
Some related experience required
Flexible schedule
1 week at 10 hours a week
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Assessments
7 assignments
Taught in English
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There are 4 modules in this course
In this first week we introduce the electromagnetic spectrum and the origin of transitions giving rise to ultraviolet and visible (UV/Vis) spectra. You will learn that electronic transitions are caused by absorption of radiation in the UV/Vis region of the electromagnetic spectrum. The reason for the wavelength and intensity of bands will be described and the colour origin of certain compounds will be discussed. You will also be shown how UV/Vis spectroscopy is performed and you will be able to run and analyse your own spectra. As the final activity in this module you are given a link to view how to obtain a UV/Visible spectrum in the laboratory. Good luck, try and participate in the discussion forums to enhance your learning and don't forget to complete the end of week laboratory quiz which contributes to your final mark.
What's included
10 videos7 readings2 assignments
In this module we introduce the theory underpinning infrared (IR) spectroscopy and show examples of analysis using the technique. Transitions between the vibrational energy levels of molecules occurs in the infrared region of the electromagnetic spectrum. We start with the theory underlying vibration using the simple harmonic oscillator model. Analysis of more complex molecules is introduced using group frequencies and number of vibrational modes. You will also be shown how to obtain an infrared spectrum and will have an opportunity to run your own spectrum. At the end of this module you are given a link to view how to obtain an infra red spectrum in the laboratory. Don't forget to complete the end of week laboratory quiz which contributes to your final mark for this course.
What's included
6 videos4 readings2 assignments
This week we concentrate on Nuclear Magnetic Resonance (NMR) spectroscopy. Here a magnetic field is used to create energy levels for magnetic nuclei present in a molecule. Transition between these energy levels occurs in the radiofrequency region of the electromagnetic spectrum. The positions of the bands in the observed spectrum is dependent on the shielding of the nuclei by the local electronic structure, giving rise to a parameter known as chemical shift. Bands also display fine structure caused by spin-spin coupling with neighbouring nuclei. Examples on the analysis of NMR spectra for structure determination will be given. As the final activity in this module you are given a link to view how to obtain an NMR spectrum in the laboratory. Don't forget to compete this end of week laboratory quiz which contributes to your final mark.
What's included
9 videos4 readings2 assignments
What's included
1 assignment
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JE
5
Reviewed on Dec 26, 2023
I learned a lot about the physics behind spectroscopy. The lectures were easy to follow and understand and the notes were detailed. I definitely recommend this course for chemistry-related majors.
RG
4
Reviewed on Oct 25, 2017
Some of the questions had wrong answers in the system and hence the actual marks shown is not reflective of the exam. Please see to it that the system has correct answers.
KB
5
Reviewed on Oct 14, 2020
This course helped me to further understand the principle behinds the 3 main spectroscopic techniques: UV/VIS, IR and NMR which is very beneficial for my future career working in a lab environment.
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