That would be this one: https://www.science.org/content/blog-post/things-i-won-t-work-azidoazide-azides-more-or-less https://www.science.org/content/blog-post/t

That would be this one: https://www.science.org/content/blog-post/things-i-won-t-work-azidoazide-azides-more-or-less https://www.science.org/content/blog-post/things-i-won-t-wor... > We're talking high-nitrogen compounds here (a specialty of Klapötke's group), and the question is not whether such things are going to be explosive hazards. (That's been settled by their empirical formulas, which generally look like typographical errors). The question is whether you're going to be able to get a long enough look at the material before it realizes its dream of turning into an expanding cloud of hot nitrogen gas.