title: Synthesis and characterization of the pentazolate anion cyclo-N5- in (N5)6(H3O)3(NH4)4Cl.
abstract: Pentazole (HN5), an unstable molecular ring comprising five nitrogen atoms, has been of great interest to researchers for the better part of a century. We report the synthesis and characterization of the pentazolate anion stabilized in a (N5)6(H3O)3(NH4)4Cl salt. The anion was generated by direct cleavage of the C-N bond in a multisubstituted arylpentazole using m-chloroperbenzoic acid and ferrous bisglycinate. The structure was confirmed by single-crystal x-ray diffraction analysis, which highlighted stabilization of the cyclo-N5- ring by chloride, ammonium, and hydronium. Thermal analysis indicated the stability of the salt below 117°C on the basis of thermogravimetry-measured onset decomposition temperature.
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Zhang
authors.affiliation: School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, Liaoning 114051, China.
authors.forename: Chengguo
authors.initials: C
authors.lastname: Sun
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China. hubc@njust.edu.cn luming@mail.njust.edu.cn.
authors.forename: Bingcheng
authors.initials: B
authors.lastname: Hu
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
authors.forename: Chuanming
authors.initials: C
authors.lastname: Yu
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China. hubc@njust.edu.cn luming@mail.njust.edu.cn.
authors.forename: Ming
authors.initials: M
authors.lastname: Lu