65832-15-7Relevant academic research and scientific papers
Synthesis, structure and N-N bonding character of 1,1-disubstituted indazolium hexafluorophosphate
Ning, Yingtang,Kawahata, Masatoshi,Yamaguchi, Kentaro,Otani, Yuko,Ohwada, Tomohiko
, p. 1881 - 1884 (2018/02/23)
1,1-Disubstituted indazolium hexafluorophosphates were synthesized via intramolecular electrophilic amination reactions under mild conditions. The crystal structures were determined and are consistent with the presence of a stable N-N bond, which can be cleaved by hydrogenation. Both experimental and computational studies suggest a covalent bonding character of the N-N bond, with diminished aromaticity of the newly formed pyrazolium ring due to the quaternary ammonium atom (N1), in contrast to the aromatic character of the parent indazole.
