Isotopic H_2_NCN laboratory spectroscopic study

It was detected recently toward the solar-type protostar IRAS 16293-2422 B together with H_2_N^13^CN and HDNCN in the course of the Atacama Large Millemeter/submillimeter Array (ALMA) Protostellar Interferometric Line Survey (PILS). The detection of the 15N isotopomers or the determination of upper limits to their column densities was hampered by the lack of accurate laboratory data at the frequencies of the survey.

We wanted to determine spectroscopic parameters of the ^15^N isotopomers of cyanamide that are accurate enough for predictions well into the submillimeter region and to search for them in the PILS data.