Pentazolate

Pentazolate
Identifiers
3D model (JSmol)
  • InChI=1S/N5/c1-2-4-5-3-1/q-1
    Key: DAHQTMWHOQRXRN-UHFFFAOYSA-N
  • N1=NN=N[N-]1
Properties
N−5
Conjugate acid Pentazole
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Precursors to pentazolates. (R=3,5-dimethyl-4-hydroxylphenyl)

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 (N5)6(H3O)3(NH4)4Cl containing pentazolate anion starting a substituted phenylpentazole, m-CPBA and iron(II) glycinate.[1] A series of metal and nonmetal pentazolates were subsequently synthesized according to their work.

List of pentazolates

Appearance Dec. temp (°C) Ref
LiN5 white 133 [2]
LiN5·3H2O colorless 139 [2]
[Na(N5)(H2O)]·2H2O colorless 111.3 [3]
[Mg(N5)2(H2O)6]·4H2O colorless 103.5 [3]
[Al(N5)3(H2O)6]·9H2O white 141.4 [4]
[Mn(N5)2(H2O)4]·4H2O colorless 104.1 [3]
[Fe(N5)2(H2O)4]·4H2O pale green 114.7 [3]
[Fe(N5)3(H2O)6]·9H2O reddish brown 108.9 [4]
[Co(N5)2(H2O)4]·4H2O bright orange 58.9 [3]
AgN5 pale white 120 [5]
[Pb4(OH)4]4(N5)4 colorless 80 [6]
[N(CH3)4]N5 white 80.8 [7]
(NH3OH)N5 white 104.3 [7]
[C(NH2)3]N5 white 88.1 [7]
NH4N5 white 102.0 [7]
N2H5N5 white 85.3 [7]
(CN7H6)N5 96.3 [8]

References

  1. ^ Zhang, C., Sun, C., Hu, B., Yu, C., & Lu, M. (2017). Synthesis and characterization of the pentazolate anion cyclo-N5− in (N5)6(H3O)3(NH4)4Cl. Science, 355(6323), 374–376. doi:10.1126/science.aah3840
  2. ^ a b Xu, Y., Ding, L., Yang, F., Li, D., Wang, P., Lin, Q., & Lu, M. (2022). LiN5: A novel pentazolate salt with high nitrogen content. Chemical Engineering Journal, 429, 132399.
  3. ^ a b c d e Xu, Y., Wang, Q., Shen, C. et al. A series of energetic metal pentazolate hydrates. Nature 549, 78–81 (2017). doi:10.1038/nature23662
  4. ^ a b Chen, L., Yang, C., Hu, H., Shi, L., Zhang, C., Sun, C., ... & Hu, B. (2022). Iron(III) and aluminum(III) complexes of cyclopentazolate anions. CrystEngComm. doi:10.1039/D2CE01270G
  5. ^ Sun, C., Zhang, C., Jiang, C., Yang, C., Du, Y., Zhao, Y., Hu. B., Zheng. Z., Christe, K. O. (2018). Synthesis of AgN5 and its extended 3D energetic framework. Nature Communications, 9(1). doi:10.1038/s41467-018-03678-y
  6. ^ Yuan, Y., Xu, Y., Xie, Q., Li, D., Lin, Q., Wang, P., & Lu, M. (2022). Pentazolate coordination polymers self-assembled by in situ generated [Pb4(OH)4]4+ cubic cations trapping cyclo-N5–. Dalton Transactions, 51(15), 5801-5809.
  7. ^ a b c d e Yang, C., Zhang, C., Zheng, Z., Jiang, C., Luo, J., Du, Y., Hu. B., Sun. C., Christe, K. O. (2018). Synthesis and Characterization of cyclo-Pentazolate Salts of NH4+, NH3OH+, N2H5+, C(NH2)3+, and N(CH3)4+. Journal of the American Chemical Society. doi:10.1021/jacs.8b05106
  8. ^ Yu, R. J., Liu, Y. J., Huang, W., & Tang, Y. X. (2022). A hybrid of tetrazolium and pentazolate: An energetic salt with ultrahigh nitrogen content and energy. Energetic Materials Frontiers. doi:10.1016/j.enmf.2022.05.002

See also

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