The spectrum of DO2 near 60 GHz and the structure of the hydroperoxyl radical

Abstract

Spectra for the lowest rotational transition in DO₂, N=1←0, have been observed near 60 GHz. These data have been used to calculate the sum of the rotational constants B+C for DO₂=60 467.7±3 MHz. This result was combined with other measurements on HO₂ to compute a structure for the hydroperoxyl radical: r (H–O) =0.977×10⁻¹⁰ m, r (O–O) =1.335×10⁻¹⁰ m, and 2 that (ε_bb+ε_cc)/2=−191±3 MHz for elements of the electron–spin rotation tensor and a value of −4.2±1.5 MHz for the Fermi contact interaction parameter σ.