Isotopic chirality and high-resolution gigahertz and terahertz spectroscopy of <i>trans</i>-2,3-dideutero-oxirane (<i>tc</i>-CHDCHDO).

ABSTRACT: We report the observation and assignment of the rotational spectra of the isotopically chiral molecule, trans-2,3-dideutero-oxirane (tc-CHDCHDO) measured with the Zurich gigahertz (GHz) spectrometer (64 to 500 GHz and Δν/ν = 10^-11) and with our highest resolution Fourier transform infrared spectrometer at the Swiss synchrotron light source (SLS) (best instrumental resolution Δṽ = 0.00053 cm^-1) in the terahertz range (far infrared from 25 to 80 cm^-1). The combined GHz and THz spectra were analysed using an accurate effective Hamiltonian providing newly determined rotational parameters, which are crucial for the prediction of trans-2,3-dideutero-oxirane transitions to be observed by astrophysical spectroscopy. The rec

SUBMITTER: Chen Z 

PROVIDER: S-EPMC12687317 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature