Rotational and vibrational spectroscopy of 1-cyanoadamantane and 1-isocyanoadamantane

•cyanoadamantane and isocyanoadamantane have been characterized in the gas phase.•Their medium resolution far- and mid-infrared spectra have been measured.•Rotational transitions have been recorded in the millimeter-wave domain.•Quantum chemistry has been used to guide spectroscopic assignments.