Rotational spectrum of saccharine

Alonso, Elena R.

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https://hdl.handle.net/2142/96944 Copy

Description

Title

Rotational spectrum of saccharine

Author(s)

Alonso, Elena R.

Contributor(s)

• Alonso, José L.
• Mata, Santiago

Issue Date

2017-06-20

Keyword(s)

Fundamental interest

Abstract

A significant step forward in the structure-activity relationships of sweeteners was the assignment of the AH-B moiety in sweeteners by Shallenberger and Acree footnote{R. S. Shallenberger, T. E. Acree. Nature 216, 480-482 Nov 1967.}$^{,}$footnote{R. S. Shallenberger. Taste Chemistry; Blackie Academic & Professional, London, (1993)._x000d_ }. They proposed that all sweeteners contain an AH-B moiety, known as glucophore, in which A and B are electronegative atoms separated by a distance between 2.5 to 4 AA. H is a hydrogen atom attached to one of the electronegative atom by a covalent bond. For saccharine, one of the oldest artificial sweeteners widely used in food and drinks, two possible B moieties exist ,the carbonyl oxygen atom and the sulfoxide oxygen atom although there is a consensus of opinion among scientists over the assignment of AH-B moieties to HN-SO. In the present work, the solid of saccharine (m.p. 220ºC) has been vaporized by laser ablation (LA) and its rotational spectrum has been analyzed by broadband CP-FTMW and narrowband MB-FTMW Fourier transform microwave techniques. The detailed structural information extracted from the rotational constants and $^{14}$N nuclear quadrupole coupling constants provided enough information to ascribe the glucophore's AH and B sites of saccharine. _x000d_ _x000d_ _x000d_

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/96944

DOI

https://doi.org/10.15278/isms.2017.TE03

Copyright and License Information

Copyright 2017 Elena R. Alonso

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