The free jet millimeter wave spectra of 1,4-anhydroerythritol (a C4 anhydrosugar) and of three deuterated isotopologues have been recorded in the frequency region 59.6-78.3 GHz. Rotational transitions have been assigned only for the lowest in energy conformer (according to DFT calculations). Its structure is characterized by a distorted ring and two O-H∙∙∙O hydrogen bonds involving the two alcoholic groups and the ring oxygen. Since C2 sugars have already been observed, and C3 sugars have been extensively searched – with controversial results - in the interstellar medium, we believe that 1,4-anhydroerythritol – a C4 sugar - to be of interest for astrochemical observation of larger sugar molecules. Accurate rest frequencies are provided for the radio-astronomical search.
Laboratory Observation of the Rotational Spectrum of a C4 Sugar, 1,4-Anhydroerythritol / B.M.Giuliano; S.Blanco; S.Melandri; W. Caminati. - In: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. - ISSN 0067-0049. - STAMPA. - 179:(2008), pp. 355-359. [10.1086/592295]
Laboratory Observation of the Rotational Spectrum of a C4 Sugar, 1,4-Anhydroerythritol
GIULIANO, BARBARA MICHELA;MELANDRI, SONIA;CAMINATI, WALTHER
2008
Abstract
The free jet millimeter wave spectra of 1,4-anhydroerythritol (a C4 anhydrosugar) and of three deuterated isotopologues have been recorded in the frequency region 59.6-78.3 GHz. Rotational transitions have been assigned only for the lowest in energy conformer (according to DFT calculations). Its structure is characterized by a distorted ring and two O-H∙∙∙O hydrogen bonds involving the two alcoholic groups and the ring oxygen. Since C2 sugars have already been observed, and C3 sugars have been extensively searched – with controversial results - in the interstellar medium, we believe that 1,4-anhydroerythritol – a C4 sugar - to be of interest for astrochemical observation of larger sugar molecules. Accurate rest frequencies are provided for the radio-astronomical search.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.