The millimeter wave spectrum of silver monoxide, AgO

Abstract

The pure rotational spectra of AgO107 and AgO109 were recorded in the 117–380 GHz spectral region using a dc-sputtering absorption cell. The Ag107(I=1/2) and Ag109(I=1/2) magnetic hyperfine parameters are interpreted in terms of plausible electronic configuration contributions to the X 2Πi state. It is shown that the determined unusual sign of the Λ-doubling and Fermi contact parameters implies that the X 2Πi state is dominated by a three open shell configuration. A comparison with isovalent CuO is made.