Submillimeter-wave spectrum of anti-anti and anti-gauche diethyl ether

Measurements of the rotational spectrum of diethyl ether have been extended up to 903 GHz for the aa-conformer and up to 638 GHz for the ag-conformer. These measurements supplement previous ones up to 366 GHz and improve predictions into the THz region to be used in particular for astronomical searches for this species using the next-generation of radio-astronomy instruments such as the Atacama Large Millimeter Array.