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. 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
LiN5·3H2O
colorless
139
[Na(N5)(H2O)]·2H2O
colorless
111.3
[Mg(N5)2(H2O)6]·4H2O
colorless
103.5
[Al(N5)3(H2O)6]·9H2O
white
141.4
[Mn(N5)2(H2O)4]·4H2O
colorless
104.1
[Fe(N5)2(H2O)4]·4H2O
pale green
114.7
[Fe(N5)3(H2O)6]·9H2O
reddish brown
108.9
[Co(N5)2(H2O)4]·4H2O
bright orange
58.9
AgN5
pale white
120
[Pb4(OH)4]4(N5)4
colorless
80
[N(CH3)4]N5
white
80.8
(NH3OH)N5
white
104.3
[C(NH2)3]N5
white
88.1
NH4N5
white
102.0
N2H5N5
white
85.3
(CN7H6)N5
96.3
References
↑Zhang, Chong; Sun, Chengguo; Hu, Bingcheng; Yu, Chuanming; Lu, Ming (2017). "Synthesis and characterization of the pentazolate anion cyclo-N5− in (N5)6(H3O)3(NH4)4Cl". Science. 355 (6323): 374–376. Bibcode:2017Sci...355..374Z. doi:10.1126/science.aah3840. PMID28126812.
12Xu, Yuangang; Ding, Lujia; Yang, Feng; Li, Dongxue; Wang, Pengcheng; Lin, Qiuhan; Lu, Ming (2022). "LiN5: A novel pentazolate salt with high nitrogen content". Chemical Engineering Journal. 429 132399. doi:10.1016/j.cej.2021.132399.
12345Yang, Chen; Zhang, Chong; Zheng, Zhansheng; Jiang, Chao; Luo, Jun; Du, Yang; Hu, Bingcheng; Sun, Chengguo; Christe, Karl 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. 140 (48): 16488–16494. Bibcode:2018JAChS.14016488Y. doi:10.1021/jacs.8b05106. PMID30392354.