Electronic Absorption Spectroscopy
... The quantum mechanical analysis of the simple harmonic oscillator is discussed at length in elementary textbooks. As expected, the system is quantized. The energies of the system are characterized by En= (n + %)hvowhere n is a positive integer and v, = [J(k/m)]~n.Note that the quantum mechanical and ...
... The quantum mechanical analysis of the simple harmonic oscillator is discussed at length in elementary textbooks. As expected, the system is quantized. The energies of the system are characterized by En= (n + %)hvowhere n is a positive integer and v, = [J(k/m)]~n.Note that the quantum mechanical and ...
FTIR Spectroscopy
... for Rotational Transitions • It appears that there might be many transitions from a state with (v”,J”). However there are actually few transitions because of Selection Rules. • Selection Rules for Rotational Transitions: – There must be an oscillating dipole moment. – For a diatomic molecule like HB ...
... for Rotational Transitions • It appears that there might be many transitions from a state with (v”,J”). However there are actually few transitions because of Selection Rules. • Selection Rules for Rotational Transitions: – There must be an oscillating dipole moment. – For a diatomic molecule like HB ...
The Electronic Partition Function for Atoms or Ions
... i.e., the ground state degeneracy. Only at very high temperatures are other terms significant. This is simple, but the complexity arises in calculating g0 . For atoms, this is still reasonably simple (it becomes much less so for molecules). The degeneracy of an atomic state arises from the fact that ...
... i.e., the ground state degeneracy. Only at very high temperatures are other terms significant. This is simple, but the complexity arises in calculating g0 . For atoms, this is still reasonably simple (it becomes much less so for molecules). The degeneracy of an atomic state arises from the fact that ...
Unit 2 Intro Worksheet - Coral Gables Senior High
... 2. Why are you unable to observe the wavelike motion of a soccer ball as it is kicked toward a goal? 3. What is the quantum mechanical model? 4. Explain what is meant by the Heisenberg uncertainty principle. 5. Explain the three principles that govern the electron configuration in an atom. Matching ...
... 2. Why are you unable to observe the wavelike motion of a soccer ball as it is kicked toward a goal? 3. What is the quantum mechanical model? 4. Explain what is meant by the Heisenberg uncertainty principle. 5. Explain the three principles that govern the electron configuration in an atom. Matching ...
Quantum Theory of Atoms and Molecules
... Electronic structure of atoms. Schrödinger equation for 1-electron atoms and form of solutions. Energy levels, orbitals and their representation, quantum numbers and their interpretation, spin-orbit coupling. Many electron atoms, orbitals and the orbital approximation, energy levels, Pauli exclusion ...
... Electronic structure of atoms. Schrödinger equation for 1-electron atoms and form of solutions. Energy levels, orbitals and their representation, quantum numbers and their interpretation, spin-orbit coupling. Many electron atoms, orbitals and the orbital approximation, energy levels, Pauli exclusion ...
A Spectral Analysis of Laser Induced Fluorescence of Iodine
... spectral analysis of laser induced fluorescence of molecular iodine I2 at room temperature. The educational value of this experiment is two-fold: On one hand it helps students practice some indispensable spectrometry skills inasmuch as they assign electron transitions based on selection rules and Fr ...
... spectral analysis of laser induced fluorescence of molecular iodine I2 at room temperature. The educational value of this experiment is two-fold: On one hand it helps students practice some indispensable spectrometry skills inasmuch as they assign electron transitions based on selection rules and Fr ...
B - Piazza
... Vibrational Motion: A Simple Harmonic Oscillator The Schrödinger Equation can be separated into equations for the positions of the electrons and those of the nuclei. The simple harmonic oscillator accurately describes the nuclear positions of a diatomic molecule, as well as more complex molecules. ...
... Vibrational Motion: A Simple Harmonic Oscillator The Schrödinger Equation can be separated into equations for the positions of the electrons and those of the nuclei. The simple harmonic oscillator accurately describes the nuclear positions of a diatomic molecule, as well as more complex molecules. ...
the influence of ligands` vibrational motion on the optical
... capping are acting as bridge moiety to the surrounding medium and can be exchanged upon demand, to allow bounding or solvation, as well as control of inter-particle interactions. However, the influence of the capping ligands on the intrinsic electronic properties of CQDs was studied only to a lesser ...
... capping are acting as bridge moiety to the surrounding medium and can be exchanged upon demand, to allow bounding or solvation, as well as control of inter-particle interactions. However, the influence of the capping ligands on the intrinsic electronic properties of CQDs was studied only to a lesser ...
Introduction to Spectroscopy
... • H atom – simplest: En = -13.6/n2 eV; transitions between levels; absorption/emission lines • Classify E levels into 4 types: – Electronic – due to orbital motion of e-; lowest = ground state – quantum number n, with typical DE ~ eV (remember kBT ~ 1/40 eV at Room T); transitions produces uv-vis sp ...
... • H atom – simplest: En = -13.6/n2 eV; transitions between levels; absorption/emission lines • Classify E levels into 4 types: – Electronic – due to orbital motion of e-; lowest = ground state – quantum number n, with typical DE ~ eV (remember kBT ~ 1/40 eV at Room T); transitions produces uv-vis sp ...
1 Chemical kinetics
... the associated hypersurface to reach the product side. They stay in quasi-equilibrium on the reactant side until this maximum point is reached. The first Eyring equation provides an expression for unimolecular rate constants: ...
... the associated hypersurface to reach the product side. They stay in quasi-equilibrium on the reactant side until this maximum point is reached. The first Eyring equation provides an expression for unimolecular rate constants: ...
MOLECULAR SPECTROSCOPY
... WHEN THE THERMAL ENERGY IS ABSORBED BY A MOLECULE,IT IS STORED WITH IN THE MOLECULE IN THE FORM OF : •(1) TRANSLATIONAL MOTION OF THE MOLECULE. •(2) INTERNAL MOVEMENT OF THE ATOMS OF THE MOLECULE, i.e. ROTATIONAL MOTION AND VIBRATIONAL MOTION. THERE ARE THREE TRANSLATIONAL DEGREE OF FREEDOM.THE REM ...
... WHEN THE THERMAL ENERGY IS ABSORBED BY A MOLECULE,IT IS STORED WITH IN THE MOLECULE IN THE FORM OF : •(1) TRANSLATIONAL MOTION OF THE MOLECULE. •(2) INTERNAL MOVEMENT OF THE ATOMS OF THE MOLECULE, i.e. ROTATIONAL MOTION AND VIBRATIONAL MOTION. THERE ARE THREE TRANSLATIONAL DEGREE OF FREEDOM.THE REM ...
Chemistry 330
... A Rotational Raman Spectrum The rotational energy levels of a linear rotor and the transitions allowed by the J = 2 Raman selection rules. The form of a typical rotational Raman spectrum ...
... A Rotational Raman Spectrum The rotational energy levels of a linear rotor and the transitions allowed by the J = 2 Raman selection rules. The form of a typical rotational Raman spectrum ...
chapter 13 - University of Michigan
... the electrons rearrange themselves much more rapidly than the nuclei. To a very good approximation, the electronic state can be considered to occur instantaneously, while the nuclear configuration remains fixed. This is known as the Franck-Condon principle. It has the same physical origin as the Bor ...
... the electrons rearrange themselves much more rapidly than the nuclei. To a very good approximation, the electronic state can be considered to occur instantaneously, while the nuclear configuration remains fixed. This is known as the Franck-Condon principle. It has the same physical origin as the Bor ...
Quantum Chemistry and Spectroscopy
... The description is mostly valid to any C=O group. Below is a table of few common chromophores. As one can see most of them are on the UV range. Well we know that, most of organic compounds are transparent. And UV radiation, especially strong UV, will broke most molecules. (Visible light 400 -700 nm ...
... The description is mostly valid to any C=O group. Below is a table of few common chromophores. As one can see most of them are on the UV range. Well we know that, most of organic compounds are transparent. And UV radiation, especially strong UV, will broke most molecules. (Visible light 400 -700 nm ...
Slide 1
... • As a result we have characteristic IR and Raman frequencies, ni, which are reflect bond types in the molecule. The frequency pattern forms a “fingerprint” for the molecule and its structure. • Variations due to conformation and environment give structural insight and are the prime tools for Protei ...
... • As a result we have characteristic IR and Raman frequencies, ni, which are reflect bond types in the molecule. The frequency pattern forms a “fingerprint” for the molecule and its structure. • Variations due to conformation and environment give structural insight and are the prime tools for Protei ...
Lecture 5: Spectroscopy and Photochemistry I
... • Infrared radiation (λ = 0.8 - 300 µm) – Excites vibrational motions in molecules – With a very few exceptions, infrared radiation is not energetic enough to break molecules or initiate photochemical processes ...
... • Infrared radiation (λ = 0.8 - 300 µm) – Excites vibrational motions in molecules – With a very few exceptions, infrared radiation is not energetic enough to break molecules or initiate photochemical processes ...
Franck–Condon principle
The Franck–Condon principle is a rule in spectroscopy and quantum chemistry that explains the intensity of vibronic transitions. Vibronic transitions are the simultaneous changes in electronic and vibrational energy levels of a molecule due to the absorption or emission of a photon of the appropriate energy. The principle states that during an electronic transition, a change from one vibrational energy level to another will be more likely to happen if the two vibrational wave functions overlap more significantly.