Indemnity4 t1_j5hlhek wrote
Reply to comment by RunagateRampant in Why cant C2 exist, if carbon is tetra valent and forms bonds with other carbon atoms ( not 4 though) ? by [deleted]
> C2 alone isn’t possible
Sure it is, in the gas phase! Diatomic carbon is represented as :C=C:. To get deeper into MO, it exists in both singlet and triple forms.
What is a little bit more complicated is quadruple bonded carbon. It does appear it can have a forth order bond to another carbon atom (tetravalent), but it is in the form of a pi-bond and two sigma-bonds.
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