Template:Molecular formula Hill key
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Generates a string version of the molecular formula suitable for sorting in Hill order. Every element that is present is given a fixed-width zero-padded field for the number of atoms present (currently field-width=5, based on largest formula in Category:Set index articles on molecular formulas). It can thus be used as a hidden key in a sortable table (see Help:Sortable tables#Specifying a sort key for a cell).
Usage
| Syntax | Result | Dev-notes |
|---|---|---|
{{Molecular formula Hill key|C=1|H=1|B=1}}
| C00001H00001B00001 | verifying Hill order |
{{Molecular formula Hill key|C=1|B=1}}
| C00001B00001 | verifying Hill order |
{{Molecular formula Hill key|H=1|B=1}}
| B00001H00001 | verifying Hill order |
{{Molecular formula Hill key|C=1|H=5|N=5}}
| C00001H00005N00005 | |
{{Molecular formula Hill key|C=1.5|H=1.05}}
| C001.5H01.05 | TODO: handle non-integers |
{{Molecular formula Hill key|C=1|H=5|N=5|charge=-}}
| C00001H00005N00005− | TODO: specify as 1 |
{{Molecular formula Hill key|C=1|H=5|N=5|charge=5}}
| C00001H00005N000055 | TODO: specify as + |
{{Molecular formula Hill key|C=1|H=5|N=5|charge=+4}}
| C00001H00005N00005+4 | TODO: zero-pad |
{{Molecular formula Hill key|C=1|H=5|N=5|charge=4+}}
| C00001H00005N000054+ | TODO: canonical to charge-symbol first |