pkienzle
commented
8 months ago Bits of mhchem syntax from the manual that won't work in periodictable.
I'm not seeing anything particularly compelling, so closing the ticket.
| example | description |
|---|---|
| Hg^2+ | ^ion |
| Fe^{II}Fe^{III}2O4 | oxidation states |
| [Hg^{II}I4]^2- | square bracket |
| H2O(l) | solid/liquid/gas/aqueous; not needed until we have phase-based density |
| 1/2 H2O | fractions |
| (1/2) H2O | parenthesized fraction |
| A-B=C#D | bonds |
| A\bond{-}B\bond{=}C\bond{#}D | bonds |
| A\bond{1}B\bond{2}C\bond{3}D | bonds |
A\bond{~}B\bond{~-}C |
bonds |
A\bond{~--}B\bond{~=}C\bond{-~-}D |
bonds |
| A\bond{...}B\bond{....}C | bonds |
| A\bond{->}B\bond{<-}C | bonds |
| A - B | subtraction, not bonding |
| A = B | equality, not bonding |
| A \pm B | plus/minus |
| OCO^{.-} | unpaired electrons |
| NO^{(2.)-} | radical dots |
Li^x_{Li,1-2x}Mg^._{Li,x}$V$'_{Li,x}Cl^x_{Cl} |
kröger-vink notation |
| KCr(SO4)2*12H2O | dot separator |
| KCr(SO4)2.12H2O | dot separator (conflicts with fractional formulas) |
| KCr(SO4)2 * 12 H2O | spacing to disambiguate |
| $n$ H2O | variables |
| ^{227}_{90}Th+ | prefix isotope, z |
| ^227_90Th+ | prefix isotope, z without braces |
| H{}^3HO | disambiguation of H{3+}HO and HH[3]O |
| NO_x | variables |
| Fe^n+ | variables |
| NH3 ^ | gas |
| NaCl v | precipitate |
| NaCl (v) | precipitate |
| NO^* | excited state |
| 1s^2-N | orbitals |
| iPr | ?? |
| ~Fe | approximate |
The mhchem package used by mediawiki and stackexchange uses a similar ascii chemical formula language to the one used by periodictable.
Adjust the formula parser to accept mhchem syntax or document how it is different.