Detection of the elusive cyclo−1,2-dihydrotetrazete (N4H2) in the gas phase
Jianchao Yang, Xinyue Gong, Zhibiao Li, You Wu, Xiaohu Li, Weijun Zheng, Ralf I Kaiser, Chongqin Zhu, Cheng Zhu · 2026
Read Detection of the elusive cyclo−1,2-dihydrotetrazete (N4H2) in the gas phase by Jianchao Yang, Xinyue Gong, Zhibiao Li, You Wu, Xiaohu Li, Weijun Zheng, Ralf I Kaiser, Chongqin Zhu, Cheng Zhu (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13575127.txt.
Description
Jianchao Yang and colleagues reported in 2026 the first gas-phase detection of cyclo-1,2-dihydrotetrazete, a ring of four nitrogen atoms bearing two hydrogens. Nitrogen hydrides draw interest as possible high-energy materials, but cyclic forms are hard to make because of high ring strain. The team formed the compound in frozen ammonia ice struck by energetic electrons.
Both trans and cis forms appeared, along with an open-chain relative. A soft ionization mass method picked them apart as they left the ice on warming. The ring held together as a free gas species without high pressure or stabilizing groups. The authors suggest the route may open paths to larger nitrogen rings.
Catalog record
| CREATOR | Jianchao Yang, Xinyue Gong, Zhibiao Li, You Wu, Xiaohu Li, Weijun Zheng, Ralf I Kaiser, Chongqin Zhu, Cheng Zhu |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 26 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |