Knowledge Bank

The pure rotational spectrum of BaNH in its $X1\sum +$ ground electronic state has been recorded using millimeter/submillimeter direct absorption methods in the range 366 - 415 GHz, as well as that of its deuterium isotopomer. The molecules were produced in the presence of a d.c. discharge by the reaction of ammonia or $ND3$ and barium vapor, produced in the Broida - type oven. Transitions arising from the ground vibrational state and the excited vibrational bending mode ($0110$) were measured. The molecule appears to be linear, with $B0(BaNH)=7984.549MHz$ and $B0(BaND)=7060.446MHz$. An $r0$ structure indicates $r0(BaN)=2.078\backslash AA$ and $r0(NH)=1.011\backslash AA$.