[ThrowawayR2]

The paper is available if you do a bit of digging. Following the name of the principal investigator goes to his site. The paper is not in his list of publications (one would think an academic would be a stickler about updating that?) but the news link leads to the institution's news story about that research¹. It's worth a read since it's more detailed than the New Scientist article without being as dense as the paper itself. At the bottom of the institution's news story is a link to the paper² which is freely available.

So if anyone is wondering what the "more chemically accurate name would be a mouthful refers to" (oP8-CN, tI14-C₃N₄, hP126-C₃N₄, and tI24-CN₂ were the carbon nitride forms produced) or what the "powerful explosive" mention refers to ("Energy density calculations were performed for the four C–N compounds with respect to decomposition into graphite and molecular nitrogen, at ambient conditions. They revealed that they have a high gravimetric energy density, comparable to or higher than that of TNT for oP8-CN, tI14-C₃N₄, hP126-C₃N₄,and for tI24-CN₂, a value even higher than for RDX..."), it's all there.

¹ https://www.ph.ed.ac.uk/news/2023/breakthrough-in-synthesis-...

² https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.202308...