Category Archives: Ring puckering

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Ribofuranose published

An article on ribofuranose appeared in Chemical Communications last April 1. In this work we explored the conformational properties of the biologically-active five-membered ring form of ribose using its rotational signature in a jet expansion. Previous studies in the gas phase and crystal structures had shown that the isolated molecule adopts a six-membered pyranose form, strikingly different to the biological use of ribose, as in RNA. Our spectroscopic information made possible a direct comparison of the observed gas phase preferences with the crystal structures.

Figure ribofuranosa

In the figure above the two observed structures of methyl-beta-ribofuranoside and a diagram showing the puckering properties of the molecule (intramolecular hydrogen bond parameters in angstrom).


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B. Sc. thesis – Patricia Monge

Congratulations to Patricia Monge, who passed her B. Sc. thesis last July 10! Patri analyzed the conformational preferences of two seven-membered rings (cycloheptene and cyanocycloheptane) and got a 8.5/10 qualification. Work on these molecules will continue in the next months in collaboration with the Grabow group in Hannover.


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ISMS meeting

The International Symposium on Molecular Spectroscopy (ISMS), a landmark for the high-resolution Spectroscopy community, will move to Champaign-Urbana this year (June, 16-20). The meeting follows 68 succesful editions at the Ohio State University (Columbus, OH). Our group collaborates in five communications.

TOC caprolactone version 2

We show in the figure above two conformations observed for the floppy seven-membered ring of caprolactone.