Infrared Spectrum of Difluoramine

The infrared spectrum of gaseous difluoramine, NF₂H, has been investigated over the range 250–4000 cm^—1. Four bands of NF₂D have also been observed. The fundamental frequencies (in cm^—1) and their species are as follows: $$\begin{array}{c}{\mathrm{NF}}_2\mathrm{H}{\mathrm{:\nu }}_1{\mathrm{(a}}^{\prime }{\text{):3193;ν}}_2{\mathrm{(a}}^{\prime }{\text{):1307;ν}}_3{\mathrm{(a}}^{\prime }{\text{):972;ν}}_4{\mathrm{(a}}^{\prime }{\text{):500;ν}}_5{\mathrm{(a}}^{\mathrm{\prime \prime }}{\text{):1424;ν}}_6{\mathrm{(a}}^{\mathrm{\prime \prime }}\text{):888.}\\ {\mathrm{NF}}_2\mathrm{D}{\mathrm{:\nu }}_1{\mathrm{(a}}^{\prime }{\text{):[2333];ν}}_2{\mathrm{(a}}^{\prime }{\text{):1008;ν}}_3{\mathrm{(a}}^{\prime }{\text{):972;ν}}_4{\mathrm{(a}}^{\prime }{\text{):[500];ν}}_5{\mathrm{(a}}^{\mathrm{\prime \prime }}{\text{):1042;ν}}_6{\mathrm{(a}}^{\mathrm{\prime \prime }}\text{):888.}\end{array}$$ The bracketed values were not observed directly. The fine structure resolved in several of the bands led to a value for A — (B+C)/2 in agreement with the microwave result. No inversion splitting was detected.