Localized vibrations: moles in structure-land

John H. van der Maas

doi:10.1117/12.56305

1 March 1992 Localized vibrations: moles in structure-land

John H. van der Maas

Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56305
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany

Abstract

Functional groups reveal specific information about their direct surroundings; in fact, they form the moles, the undercover agents, in molecules. However, as with agents, the information is produced in coded form (spectral data) so one has to know the code in detail before the message is completely understood. The substantially improved accuracy (wavenumber, intensity) and sensitivity brought about by FT-instruments, in combination with computer software, offer extended spectral information. Functional groups can now be examined in great detail. Obviously the amount of deducible structural items is group dependent, implying that one has to pursue the probing qualities of a functionality prior to use. The OH-group, and more in particular the OH-stretching vibration, proves to be an extremely good mole. Its potentials are demonstrated on conformational studies of various saturated alcohols, the presence of OH(DOT)(DOT)(DOT)(pi) bridges, the strength and type of OH(DOT)(DOT)(DOT)O bridges, all in an apolar solvent, and on the disclosure of different hydrogen bonds in some solid samples.

Citation Download Citation

John H. van der Maas "Localized vibrations: moles in structure-land", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56305

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