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- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(LibreTexts)/13%3A_Molecular_Spectroscopy/13.02%3A_Rotations_Accompany_Vibrational_TransitionsThis page explains the rovibrational spectra of diatomic gas molecules, detailing vibrational and rotational transitions influenced by quantum selection rules and bond length changes. It covers energy...This page explains the rovibrational spectra of diatomic gas molecules, detailing vibrational and rotational transitions influenced by quantum selection rules and bond length changes. It covers energy quantization, resulting in P- and R-branches, and discusses the rotational constant B and the Q-branch in spectroscopy.
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(LibreTexts)/13%3A_Molecular_SpectroscopyThis page discusses spectroscopy, focusing on its role in understanding electromagnetic radiation's interaction with atoms and molecules. It covers aspects including vibrational, rotational transition...This page discusses spectroscopy, focusing on its role in understanding electromagnetic radiation's interaction with atoms and molecules. It covers aspects including vibrational, rotational transitions, and electronic spectra, highlighting principles such as the Franck-Condon Principle and selection rules. Group theory is mentioned for its predictive power in IR and Raman activity, while the characteristics of molecular spectra are linked to factors like normal modes and rotational inertia.
- https://chem.libretexts.org/Courses/Western_Washington_University/Biophysical_Chemistry_(Smirnov_and_McCarty)/05%3A_Nuclear_Magnetic_Resonance_(NMR)_Spectroscopy_-_Introduction/5.01%3A_Nuclear_Spin_and_Magnetic_FieldIn this Chapter, we will discuss why certain types of atomic nuclei are sensitive to the external magnetic field due to their quantum property known as the ???spin???. We further will cover the depend...In this Chapter, we will discuss why certain types of atomic nuclei are sensitive to the external magnetic field due to their quantum property known as the ???spin???. We further will cover the dependence between the magnetic sensitivity of atomic nuclei and quantization of their energy levels once these atoms are exposed to the magnetic fields. You will be able to quantitatively determine the frequency of magnetic resonance of a specific type of atomic nucleus exposed to a magnetic filed.
- https://chem.libretexts.org/Courses/Western_Washington_University/Biophysical_Chemistry_(Smirnov_and_McCarty)/04%3A_Spectroscopy_-_Types_Key_Features_Examples/4.03%3A_Quantum_Mechanics_and_Quantum_Oscillator_ModelThis Chapter describes a basic model which allows to explain the phenomenon of quantization of energy levels for a system of electrons in atoms (that is the quantum mechanical models of levels availab...This Chapter describes a basic model which allows to explain the phenomenon of quantization of energy levels for a system of electrons in atoms (that is the quantum mechanical models of levels available for a sub-atomic particle). The model presented here ("particle in a box") is much more basic than the ones used by quantum chemists today, yet this model allows understanding of the basics of quantum mechanics as a guiding theory vital for modern experimental physics and chemistry.
