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Chemistry

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  • $\begingroup$ I'm guessing that, more generally, true $\ce{MHX2}$ compounds with well-defined $\ce{HX_{2}^{-}}$ anions can exist for a number of halogens and metals, but only in non-aqueous conditions at low temperatures and/or high pressures. It's interesting to consider where the decomposition boundaries lie. $\endgroup$
    – Nicolau Saker Neto
    Commented Mar 13, 2023 at 10:09
  • $\begingroup$ @NicolauSakerNeto Yes, I suppose that is true. I am aware that many of statements done in context of chemistry have limited scope of validity. At extreme enough environment, they are often may not valid any more. Typically for low T solid matrices or interstellar space. $\endgroup$
    – Poutnik
    Commented Mar 13, 2023 at 10:39
  • $\begingroup$ @andselisk when + is used with overset (I agree with it). should not be - at F in overset too? Like visually more consistent. $\endgroup$
    – Poutnik
    Commented Mar 13, 2023 at 10:42
  • 1
    $\begingroup$ @Poutnik Matter of taste, although the top right of F would be the preferred position, an overset is an acceptable one (doi.org/10.1351/pac200880020277, pp. 372–374). Besides, you have superscripts in the same equation right next to the drawn formula which sort of undermines the idea of consistent macro for the charge placement here. $\endgroup$
    – andselisk ♦
    Commented Mar 13, 2023 at 11:40
  • $\begingroup$ The authors from the 1954 paper were able to isolate the solid salts as well as the nonaqueous solution species, but again this would be without water or any other good B-L base. $\endgroup$
    – Oscar Lanzi
    Commented Mar 14, 2023 at 18:58