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
от партнера
Introduction to Molecular Spectroscopy
University of Manchester
Программа курса: что вы изучите
Неделя
1Ultraviolet and Visible Spectroscopy
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.
10 видео (всего 89 мин.), 7 материалов для самостоятельного изучения, 2 тестов
10 видео
Introduction1мин
What is spectroscopy?9мин
The nature and properties of electromagnetic radiation6мин
Example of energy calculation10мин
Energy levels: Molecular Orbital Theory - revision11мин
Molecular Orbital diagram for CO5мин
UV/Visible spectroscopy10мин
Example of Beer-Lambert calculation8мин
Transitions relevant to UV/Vis Spectroscopy15мин
Effect of conjugation on wavelength8мин
7 материала для самостоятельного изучения
Guidance for studying the course10мин
ACKNOWLEDGEMENTS10мин
Pre-course survey5мин
Week 1 Lecture Notes10мин
Lab 1 Introduction10мин
How to obtain a UV/Vis spectrum10мин
Run a UV/Visible spectrum10мин
2 практического упражнения
Week 128мин
UV/Vis laboratory quiz4мин
Неделя
2Infrared Spectroscopy
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.
6 видео (всего 72 мин.), 4 материалов для самостоятельного изучения, 2 тестов
6 видео
Vibrational frequency12мин
Example vibrational frequency calculation10мин
Energy levels and dipoles14мин
Vibrational modes9мин
Example IR spectra of organic molecules12мин
4 материала для самостоятельного изучения
Week 2 Lecture Notes10мин
Lab 2 Introduction10мин
How to obtain an infra red spectrum10мин
Run an infra red spectrum10мин
2 практического упражнения
Week 220мин
IR Lab Quiz4мин
Неделя
3Nuclear Magnetic Resonance (NMR) Spectroscopy
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.
9 видео (всего 114 мин.), 4 материалов для самостоятельного изучения, 2 тестов
9 видео
Nuclear spin in an external magnetic field10мин
Spin and magnetisation13мин
Chemical shift18мин
More on chemical shift19мин
Analysis of proton spectra5мин
Spin-spin coupling6мин
Spin-spin coupling mechanism18мин
Carbon-13 NMR and pulsed methods10мин
4 материала для самостоятельного изучения
Week 3 Lecture Notes10мин
Lab 3 Introduction10мин
How to obtain an NMR spectrum10мин
Run an NMR spectrum10мин
2 практического упражнения
Week 320мин
NMR lab quiz4мин
Неделя
4Final Assessment
1 тест
1 практическое упражнение
Week 4 Quizмин
4.6
Рецензии: 41Лучшие рецензии
автор: ES•Apr 3rd 2018
Excellent material and pace. Assignments were challenging but could be completed from the lecture material alone. Overall a great experience.
автор: JL•Aug 26th 2018
Very recommended to every person who wants to understand the basic ideas, concepts and calculations of current spectroscopic techniques.
Преподаватель
Patrick J O'Malley, D.Sc
ReaderChemistry
О University of Manchester
Tracing its roots back to 1824, the University of Manchester is home to almost 40,000 students. The University has three Nobel laureates among its current staff – more than any other British university - and a total of 25 Nobel laureates have come from our past and present students and staff. We have three main goals: to undertake world-class research; to deliver an outstanding learning and student experience; and to be socially responsible.
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