Results 241 to 250 of about 254,429 (291)
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Nature, 1961
THE low-frequency vibrations of organic molecules are largely unexplored, so that it is difficult to test directly the hypothesis that odours may be correlated with them1. An indirect test was therefore devised.
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THE low-frequency vibrations of organic molecules are largely unexplored, so that it is difficult to test directly the hypothesis that odours may be correlated with them1. An indirect test was therefore devised.
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Molecular Vibrations of Hexabenzocoronenes
Spectroscopy Letters, 1986Abstract The simple (five-parameter) force-field approximations for condensed aromatics, both for the in-plane and out-of-plane vibrations, are used to calculate the frequencies for hexabenzocoronene A (C42H18) and hexabenzocoronene B (C48H24).
B. N. Cyvin, S. J. Cyvin
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Rotationless molecular vibrations
The Journal of Chemical Physics, 1988Relative coordinates convenient for variational calculations are discussed. The coordinates, for suitable representations of the potential, allow matrix elements to be expressed as sums of products of one-dimensional integrals for product basis functions. A small vibration limit is reviewed in these coordinates.
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Molecular vibrations of footballene
Chemical Physics Letters, 1988Abstract A normal coordinate analysis has been carried out for C60 “footballene”. A five-parameter force field was employed in order to calculate the vibrational frequencies. Results for the 10 Raman-active and 4 infrared-active frequencies are reported.
S.J. Cyvin +3 more
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Very anharmonic molecular vibrations
Proceedings / Indian Academy of Sciences, 1983This is a survey of various types of highly anharmonic molecular vibrations. Its purpose is to be tutorial in nature rather than exhaustive.
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Molecular rotations and vibrations
2010This chapter reviews the primary goals of molecular quantum mechanics, which is to solve the time-independent Schrödinger equation. It determines the electronic structures of atoms and molecules, with the modern emphasis on molecules of ever greater complexity.
Peter Atkins, Ronald Friedman
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Imaging with molecular vibrations
Science, 2015Bioimaging The vibrational spectra of biomolecules could in principle image cells and tissue without added markers. Practically, several technical problems need to be overcome to achieve sufficient imaging depths, resolution, and data acquisition speed.
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Matrices and Molecular Vibrations
International Journal of Mathematical Education in Science and Technology, 1971Summary The flexibility matrix of a system is described and the normal modes of vibration of various simple ‘molecules’ are derived. Matrices which describe the geometrical symmetries of the molecules are shown to commute with the flexibility matrix, and this property assists the quick calculation of normal modes.
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Molecular vibrations and molecular force fields
2006Abstract In a classical mechanics approach, the description of motion requires a dynamic trace of the displacement of an object in time, a trajectory that collects the variation in time of some coordinates q. But which coordinates? For molecules, a first choice could be cartesian coordinates for each nucleus in a laboratory reference ...
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