Effective orientation of water in 1,4-dioxane···water: the rotational spectrum of the H₂¹⁷O isotopologue

Abstract

The measurements of the rotational spectrum of 1,4-dioxane-water complex, performed by pulsed jet Fourier transform microwave spectroscopy, have been extended to the 7–18.5 GHz frequency region and to two additional isotopologues, 1,4-dioxane···H₂ ¹⁷O and 1,4-dioxane···HOD. The effective orientation of water in the complex has been obtained from the ¹⁷O quadrupole coupling constants.

Keywords:

• enriched H₂ ¹⁷O
• quadrupole coupling constants
• water orientation
• rotational spectra

Additional information

Funding

We thank Italian Minister of Education (PRIN project 2010ERFKXL_001) and the University of Bologna (RFO) for financial support. Q. Gou and G. Feng also thank the China Scholarships Council for their fellowships.