Knowledge Bank

The infrared spectrum of gaseous difluoramine, $HNF2$, has been investigated over the range $250-4000cm-1$. The fundamental frequencies (in $cm-1$), their assignment and band types are as follows: $3193,\nu 1(a\prime$, type C); 1306, $\nu 2(a\prime$, type B); 972, $\nu 3(a\prime$, type B); $500,\nu 4(a\prime$, type B); $1424,\nu 5(a\prime \prime$, type A); $888,\nu 6(a\prime \prime$, type A). the three type-B bands are well resolved into Q branches with a spacing of approximately $3cm-1$.The P and R branches of the type A $888cm-1$ band are also resolved with a spacing of approximately $0.7cm-1$. The values of the rotational constants A and $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}/2(B+C)$ obtained from these infrared results are in agreement with those determined much more precisely from the microwave spectrum. No inversion splitting was detected in the fine-structure of the resolved bands.