Does chemical compound with formula N₄O₁₀ exist?

I do not know if a dimer of $$\ce{N2O5}$$ (dinitrogen pentaoxide) exist, and if its formula is $$\ce{N4O10}$$. Can you explain me that please? I do not know where to search for this information.

• It is a big universe. There has to be at least one such "molecule" floating around in deep space somewhere. You certainly couldn't make a pressurized tank of it. – MaxW Nov 16 '15 at 23:05

PubChem database N4O10 (molecular formula) search shows that there is no known compound with this formula.

While $$\ce{NO}$$ (“mononitrogen monoxide”) and/or $$\ce{NO2}$$ (“mononitrogen dioxide”), having odd number of electrons, will dimerize or combine to form

$$\ce{N2O2{: } 2NO -> ON-NO}$$
$$\ce{N2O4{: } 2NO2 -> O2N-NO2}$$
$$\ce{N2O3{: } NO + NO2 -> ON-NO2}$$

(note the $$\ce{N-N}$$ bond),

$$\ce{N2O5}$$ is formed by the condensation of nitric acid $$\ce{HNO3}$$:

$$\ce{ 2 { }O2N-OH ->[-H2O] O2N-O-NO2 }$$

(note the $$\ce{N-O-N}$$ bond), thus can be considered nitric acid anhydride. And unlike polyphosphoric acid formation from $$\ce{H3PO4}$$, there are no remaining hydroxy groups for further condensation.

With non-standard formal approach, $$\ce{N2O5}$$ already is a dimer of hypothetical franctional-oxygen-atom-count “mononitrogen(V) oxide” $$\ce{NO_{2.5}}$$.