Can a compound have multiple structures?

[ProjectFringe]

Can a compound have multiple structures?

For example, I found two different versions of Sodium dichloride (Cl₂Na^-).

https://pubchem.ncbi.nlm.nih.gov/compound/22590707

https://pubchem.ncbi.nlm.nih.gov/compound/57736105

What makes the difference between which of these compound structures is formed, or are they the same thing?

 

[Borek]

Please read about isomers.

I am not convinced sodium dichloride is a real compound, looks more like a hypothetical triple ion with its properties estimated by computational methods.

 

[ProjectFringe]

Please read about isomers.

I am not convinced sodium dichloride is a real compound, looks more like a hypothetical triple ion with its properties estimated by computational methods.

Then how does Na^- react with Cl₂? Does it create NaCl plus a separate unbonded Cl^- ion? At least in terms of electron configuration it seems more balanced, right?

 

[Borek]

No idea if it is even possible to make them react directly, Na^- doesn't exist as a separate entity, only in exotic compounds.