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Chem Plugin

Compatible with DokuWiki

2009-12-25 or later, "Frusterick Manners"

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Format a molecular formula

Last updated on: 2017-08-14
Provides: Syntax
Repository: Source

This extension has not been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues.

Tagged with chemistry, formula, science

By Ikuo Obataya

This DokuWiki plugin formats a molecular formula easily.

Appearance	C₂H₅O₂^-Na⁺
Without the plugin	C<sub>2</sub>H<sub>5</sub>O<sub>2</sub><sup>-</sup>Na<sup>+</sup>
Using Chem plugin	<chem>C2H5O2-Na+</chem>

The latest version supports to export Open Document format using ODT plugin.

Examples

C₂H₆

<chem>C2H6</chem>

Na₂HPO₄ 12H₂O

<chem>Na2HPO4 12H2O</chem>

C₂H₅O₂^-Na⁺

<chem>C2H5O2|-Na+</chem>    // | is a splitter.

Cl₂H₆N₂Pt²⁺

<chem>Cl2H6N2Pt2+</chem>

Al₂(SO₄)₃

<chem>Al2(SO4)3</chem>

another Version

The original plugin works very fine.

For those of you who have to write more chemical formulars and have some extra wishes like easier syntax, nuclid-number, and a nicer output in DokuWiki pages the following suggestion could help you.

Syntax:

92|235U3|2+

would appear as <html>²³⁵_92<sub>3²⁺</html>; the single numbers are optional so expressions like U2+, U2, 235U or 92|235U are recognized as well as all the brackets.

Unfortunately there are some limitations:

Due to many preg_matches the entering and leaving of DokuWiki editmenu takes quite long
ODT-Support doesn't work - but that´s just due to a lack of regular expressions to get the formatting out. (May someone could give me a hand here)
if you use ions and have multiple elements the shifting breaks as I just optimized it for one digit. (May someone could give me a hand here)

I'll work on it soon (in Apr, maybe — iobataya 2010/04/04 22:23

I'd like to apply a new syntax for notation of isotopes in order to simplify either the DW syntax and the regular expressions.

Put on ^ before nucleons within a <chem> element. (→ superscript)
Put on _ before atomic number within a <chem> element. (→ subscript)

#EXAMPLE
^14_6C        (carbon-14)
^235_92U      (uranium-235)

What do you think ? — iobataya 2010/04/21 05:45

My server moved to new place. — iobataya 2010/12/06 22:50

Source code was moved to GitHub — iobataya 2013/01/20 15:39

SS 2015-12-13: Doesn't work all that well. A simple formula of calcium carbonate CaCO3 shows as CaCo3 (lower case oxygen)

Table of Contents

Chem Plugin

Examples

another Version