• A molecular vibration is a periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged...
    21 KB (2,724 words) - 21:39, 24 May 2025
  • Thumbnail for Infrared spectroscopy
    equilibrium molecular geometry), the resonant frequencies are associated with the normal modes of vibration corresponding to the molecular electronic ground...
    53 KB (5,943 words) - 18:48, 22 May 2025
  • Thumbnail for Spectroscopy
    states. Molecular spectra can be obtained due to electron spin states (electron paramagnetic resonance), molecular rotations, molecular vibration, and electronic...
    44 KB (4,768 words) - 18:59, 23 May 2025
  • Thumbnail for Quantum harmonic oscillator
    diatomic molecule Bertrand's theorem – Physics theorem Mehler kernel Molecular vibration – Periodic motion of the atoms of a molecule The normalization constant...
    44 KB (6,952 words) - 15:54, 11 April 2025
  • Thumbnail for Molecular geometry
    is molecular vibration, which corresponds to internal motions of the atoms such as bond stretching and bond angle variation. The molecular vibrations are...
    23 KB (2,301 words) - 04:26, 11 May 2025
  • measuring molecular vibrations using inelastic electron tunneling as Turin claimed, rather than responding to molecular keys fitting molecular locks, working...
    32 KB (3,856 words) - 08:08, 25 May 2025
  • Thumbnail for Molecular symmetry
    Each normal mode of molecular vibration has a symmetry which forms a basis for one irreducible representation of the molecular symmetry group. For example...
    67 KB (7,018 words) - 11:19, 21 May 2025
  • Thumbnail for Electromagnetic spectrum
    strongly at the lower end of this region. This radiation is absorbed by molecular vibrations, where the different atoms in a molecule vibrate around their equilibrium...
    47 KB (4,685 words) - 15:35, 12 May 2025
  • Thumbnail for Raman scattering
    the number of vibrational modes is 3N-5, whereas for a non-linear molecule the number of vibrational modes is 3N-6. Molecular vibrational energy is known...
    32 KB (4,134 words) - 16:30, 29 May 2025
  • Rotational–vibrational spectroscopy is a branch of molecular spectroscopy that is concerned with infrared and Raman spectra of molecules in the gas phase...
    49 KB (6,786 words) - 19:45, 24 May 2025
  • Thumbnail for Simple harmonic motion
    approximation). Simple harmonic motion can also be used to model molecular vibration. Simple harmonic motion provides a basis for the characterization...
    15 KB (2,223 words) - 14:22, 27 April 2025
  • Thumbnail for Speed of sound
    influenced by molecular vibration (see heat capacity). However, vibrational modes simply cause gammas which decrease toward 1, since vibration modes in a...
    53 KB (7,495 words) - 06:28, 25 May 2025
  • Thumbnail for Carbon dioxide
    significant vibrational motions and do not keep a fixed structure. However, in a Coulomb explosion imaging experiment, an instantaneous image of the molecular structure...
    111 KB (12,710 words) - 20:16, 29 May 2025
  • Thumbnail for Olfactory receptor
    mechanism of the vibrational frequencies of odorants could be easily suppressed by quantum effects of nonodorant molecular vibrational modes. Hence multiple...
    36 KB (4,271 words) - 20:29, 23 April 2025
  • Thumbnail for Raman spectroscopy
    although X-rays can also be used. The laser light interacts with molecular vibrations, phonons or other excitations in the system, resulting in the energy...
    86 KB (10,080 words) - 13:15, 30 May 2025
  • atoms also has vibrational energy, where the individual atoms move with respect to one another. A diatomic molecule has one molecular vibration mode: the two...
    17 KB (2,360 words) - 15:02, 12 May 2025
  • Thumbnail for Dielectric
    molecules are bent and stretched by the field and the molecular dipole moment changes. The molecular vibration frequency is roughly the inverse of the time it...
    37 KB (4,775 words) - 01:49, 26 May 2025
  • fundamental vibrational transitions. Cotton, Chapter 10 Molecular Vibrations. Cotton p. 327. Califano, S. (1976). "Chapter 9: Anharmonicity". Vibrational states...
    22 KB (2,311 words) - 22:37, 21 April 2025
  • Thumbnail for Light
    temperature by the infrared radiation. EMR in this range causes molecular vibration and heating effects, which is how these animals detect it. Above...
    53 KB (6,543 words) - 22:33, 3 April 2025
  • an intermediate as a compound that has a lifetime greater than a molecular vibration, is formed (directly or indirectly) from the reactants, and reacts...
    14 KB (1,826 words) - 11:07, 25 May 2025
  • relaxation velocities of molecular vibrational states. The lasing medium gas has such properties that an energetically lower vibrational state relaxes faster...
    3 KB (365 words) - 20:08, 27 June 2024
  • Thumbnail for Rotational spectroscopy
    quantum number. An assumption underlying these expressions is that the molecular vibration follows simple harmonic motion. In the harmonic approximation the...
    51 KB (7,154 words) - 07:00, 22 November 2024
  • Vibronic coupling (category Molecular vibration)
    between electronic and nuclear vibrational motion. The term "vibronic" originates from the combination of the terms "vibrational" and "electronic", denoting...
    21 KB (2,761 words) - 20:39, 22 May 2025
  • of picoseconds. The creation and breaking of chemical bonds and molecular vibration happen in femtoseconds. Observing the motion of electrons happens...
    12 KB (1,179 words) - 21:40, 25 May 2025
  • requires a change in molecular geometry, unimolecular rate constants cannot be larger than the frequency of a molecular vibration. Thus, in general, a...
    17 KB (2,387 words) - 12:44, 3 February 2025
  • The rule of mutual exclusion in molecular spectroscopy relates the observation of molecular vibrations to molecular symmetry. It states that no normal...
    3 KB (337 words) - 16:38, 16 May 2025
  • Rovibronic coupling (category Molecular vibration)
    state and bending vibrations will cause a large rovibronic coupling. Afterglow plasma Vibronic coupling Jungen, Ch (2019-01-22). Molecular Applications of...
    1 KB (109 words) - 20:03, 24 January 2024
  • Thumbnail for Transparency and translucency
    atomic or molecular level, physical absorption in the infrared portion of the spectrum depends on the frequencies of atomic or molecular vibrations or chemical...
    34 KB (4,306 words) - 15:48, 14 May 2025
  • Thumbnail for Docking theory of olfaction
    Pauling's notion of shape-based molecular interactions to propose a shape-based theory of odor. This superseded the older vibration theory of olfaction, and...
    22 KB (2,644 words) - 18:00, 21 May 2025
  • Watson, James K.G. (1968). "Simplification of the molecular vibration-rotation hamiltonian". Molecular Physics. 15 (5): 479–490. Bibcode:1968MolPh..15....
    38 KB (5,204 words) - 22:36, 14 April 2025