"Red oxygen" is the nickname for O$_8$. It only exists at extremely high pressures.
What kind of bond does it have? Can hydrogen theoretically have something similar at very high pressures too?
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$\begingroup$ chemistry.stackexchange.com/questions/37898/… $\endgroup$– MithoronCommented May 5, 2018 at 14:35
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2 Answers
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That is what I found on wikipedia. It has a cubic structure and it was not predicted theoretically. here the pressure is not very high but is high(10 GPa)
High-pressure studies of hydrogen typically employ a diamond anvil cell (DAC) made of two diamonds holding a few-micrometer-thick gasket containing a tiny sample of hydrogen.
These are some more images I could found of hydrogen at high pressures, but I do not think any of them are like red oxygen.
Sources
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Hydrogen forms similar clusters as cations (here). Some do not even need high pressure. The trihydrogen cation, with a triangular structure resembling an aromatic cyclopropenyl cation ring, is found in interstellar space and some planetary atmospheres, and the six-atom cation with its peculiar "turnstile" strcture (two triangles joined vertex to vertex and twisted 90 degrees from each other) is observed in solid hydrogen.
answered May 5, 2018 at 10:03