The vibrational infrared spectrum of the group IV transition metal nitride gaseous molecules

摘要

The infrared spectrum of TiN, ZrN, and HfN has been observed in absorption by using a microwave discharge through MCl4/N2mixtures as the molecular source. The molecular constants determined for each molecule are as follows: The agreement between the values of the rotational constants reported previously for TiN and ZrN establishes that each molecule has a2Sgr; ground state. The appearance of the infrared spectrum indicates that HfN also has a2Sgr; ground state.