Description:
<jats:p>Diimide (HNNH) has been prepared as a discharge product of N2H4, and infrared and Raman spectra have been obtained for both solid and matrix isolated HNNH, HNND, and DNND. The five in-plane vibrations of isolated trans-HNNH have all been determined: Raman Ag modes, 3128, 1583, and 1529 cm−1; infrared Bu modes, 3131 and 1286 cm−1. Isotopic substitution establishes the characteristic NN stretch as the 1529 cm−1 band. The Au out-of-plane torsion was not definitely assigned but could be a weak infrared feature observed at 832 cm−1. cis-Diimide was not detected. Studies of solid discharge products show that a variety of hydrogen bonded complexes form between HNNH and NH3, and some conclusions are reached regarding the structures of these.</jats:p>