Knowledge Bank

The rotational spectrum of MCN (M=Ag, Au) was observed by employing a source-modulation mi crowave spectrometer. The MCN species was generated in a dc glow discharge through the mixture of CH$3$CN and Ar by a sputtering reaction with an metal target. The spectrum of MCN was observed in the ground and $\nu 2$ vibrational excited states. The molecular constants derived from the observed transition frequencies were compared with values of theoretical calculations reported in literature.