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

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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 (εbb+εcc)/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.

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