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The article's subject is "Carborane acid", and the acidity of these compounds is worthy of discussion (the structure and stability of the conjugate base anion). However, nowhere is the structure of the acid itself actually discussed. In particular, where is the acidic H located? Is it bonded to a specific atom of the anion (or perhaps hopping among several sites) is it a separate ion (either externally or within the cage as an inclusion compound). None of the diagrams include it (there is a different H that is present), and the § Structure section appears to be about further reactions of the anion, despite saying it is about the acid. DMacks ( talk) 07:35, 2 July 2017 (UTC)
In the acidity section, it says that Carborane acid is the strongest acid, although by the H_0 values, Fluoroantimonic acid is the strongest acid (see Wikipedia article about Fluoroantimonic acid). — Preceding unsigned comment added by 2A02:8108:1BF:704E:4D1D:C50A:2BAC:953F ( talk) 14:00, 4 June 2018 (UTC)
Check the first paragraph of the acidity section to see why the H0 value for carborane acids cannot be measured. Conversely, the pKa of fluoroantimonic acid is not well defined. Alsosaid1987 ( talk) 17:50, 29 November 2018 (UTC)
What about the pKa of H(CB11(CF3)12) Anoop Manakkalath ( talk) 08:24, 29 November 2018 (UTC)
AFAIK, that particular acid has only been investigated in silico, and it is quite acidic according to the calculated gas phase acidity. However, its anion has never been protonated and isolated as the free acid. For reasons I don't see right away, the authors state that this carborane anion is explosive (despite its "inertness"), which limits investigations. Alsosaid1987 ( talk) 17:50, 29 November 2018 (UTC)
Any studies on Silicon and Germanium analogues of Carborane acids? (Eg. H(SiB11F12), H(GeB11F12) etc.) Anoop Manakkalath ( talk) 05:46, 18 October 2019 (UTC)