Rotational spectroscopy, dipole moment and 14N nuclear hyperfine structure of iso-propyl cyanide

► iso-Propyl cyanide is a molecule of astrochemical interest. ► The rotational spectrum was recorded from the microwave to the submillimeter region. ► Stark effect measurements in the microwave region caused the weak c-component to be revised downward significantly. ► Accurate spectroscopic parameters have been determined to search for the molecule in space.