The Infrared Spectra and Structure of the Chloramines and Nitrogen Trichloride

The infrared vibration-rotation spectra of gaseous NH_2Cl, NHDCl, NDCl_2 and NCl_3 were investigated from 1.4 to 25µ. Several fundamental vibrations were identified, and the large rotational constants were evaluated for NH_2Cl, NHDCl and NHCl_2. With the assistance of reasonable assumptions regarding other parameters these were used to calculate an H-N-Cl angle of 102° in NH,Cl, and suggest that ∠Cl-N-Cl = 106° and r_(N-CI) = 1.76 Å in NHCl_2. These parameters are interpreted on the basis of simple electronic considerations.