title: Pentazolate
text: # Pentazolate
  
  In chemistry, a pentazolate is a compound that contains a $cyclo-N_5^−$ ion, the anion of pentazole. In 2017, researchers prepared the first salt $(N_5)_6(H_3O)_3(NH_4)_4Cl$ containing pentazolate anion starting a substituted phenylpentazole, m-CPBA and iron(II) glycinate. A series of metal and nonmetal pentazolates were subsequently synthesized according to their work.
  
  ## List of pentazolates
  
  | | Appearance | Dec. temp (°C) |
  | - | - | - |
  | $LiN_5$ | white | 133 |
  | $LiN_5·3H_2O$ | colorless | 139 |
  | $[Na(N_5)(H_2O)]·2H_2O$ | colorless | 111.3 |
  | $[Mg(N_5)_2(H_2O)_6]·4H_2O$ | colorless | 103.5 |
  | $Al(H_2O)_6(N_5)_3·9H_2O$ | white | 141.4 |
  | $[Mn(N_5)_2(H_2O)_4]·4H_2O$ | colorless | 104.1 |
  | $[Fe(N_5)_2(H_2O)_4]·4H_2O$ | pale green | 114.7 |
  | $Fe(H_2O)_6(N_5)_3·9H_2O$ | reddish brown | 108.9 |
  | $[Co(N_5)_2(H_2O)_4]·4H_2O$ | bright orange | 58.9 |
  | $AgN_5$ | | |
  | $[Pb(OH)]_4(N_5)_4$ | colorless | 80 |
  | $[N(CH_3)_4]N_5$ | white | 80.8 |
  | $(NH_3OH)N_5$ | white | 104.3 |
  | $[C(NH_2)_3]N_5$ | white | 88.1 |
  | $NH_4N_5$ | white | 102.0 |
  | $N_2H_5N_5$ | white | 85.3 |
  | $(CN_7H_6)N_5$ | | 96.3 |
  