Template:chemical formula

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The following documentation is located at Template:chemical formula/documentation. ^[edit]

Useful links: subpage list • links • redirects • transclusions • errors (parser/module) • sandbox

This is a template used to format a chemical formula or equation.

Use

Formula punctuation

Symbol	Gives	Example	Output
\s	−	{{chemf|CH3\sCH3}}	CH3−CH3
\d	=	{{chemf|CH2\dCH2}}	CH2=CH2
\t	≡	{{chemf|HC\tCH}}	HC≡CH
\q	≣	{{chemf|[Cl4Re\qReCl4](2−)}}	[Cl4Re≣ReCl4]2−
\-	-	{{chemf|A\-B}}	A-B
\\	\	{{chemf|C\\D}}	C\D
\h	η	{{chemf|\h}}	η
\h{1}	η1-	{{chemf|\h{1} |}} § {}	η1-
\m{1}	μ1-	{{chemf|\m{1} |}}	μ1-
->	→	{{chemf|2H2 + O2 -> 2H2O}} § {}	2H2 + O2 → 2H2O
<->	⇌	{{chemf|K<->L}}	K ⇌ L
*	·	{{chemf|CoCl2*6H2O}}	CoCl2·6H2O
\*	*	{{chemf|Cp\*2Fe}}	Cp*2Fe
_{}	subscript	{{chemf|C_{''n''}H_{2''n''+2}} } § {}	CnH2n+2
^{}	superscript	{{chemf|^{13}CH4}}	13CH4
&nabla;	∇	{{chemf|&nabla;}}	∇
( )	( )	{{chemf|R\sCH(OH)CN}}	R−CH(OH)CN

end }-bracket issue

When input ends correctly with a }-bracket, like with A_{x}H_{1-x}, the final }-brackets are technically mixed up:

{{chemf|A_{x}H_{1-x}}} → A_xH_{−1x}

The closing bracket {..} of input and end of template brackets }}.

• Solutions:

add empty pipe: {{chemf|..{..}|}} (empty parameter #2)

add parameters numbers 1 and 2 (empty): {{chemf|1=..{..}|2=}}

add a space: {{chemf|..{..} }}

Result: {{chemf|A_{x}H_{1-x}|}} → A_xH_1−x

Formulas, charges, equations

Formulas (without charge) are just written:

• {{chemf|CH3(CH2)5CH3}} → CH₃(CH₂)₅CH₃
• {{chemf|Fe3S2(CO)9}} → Fe₃S₂(CO)₉
• {{chemf|C_{''n''}H_{2''n''+2}|}} → C_nH_2n+2

Charges are written inside parentheses:

• {{chemf|SO4(2-)}} → SO2−4
• {{chemf|S19(2+)}} → S2+19

Charges +1 and −1 can be written plain:

• {{chemf|Na+}} → Na⁺
• {{chemf|O2-}} → O−2

same as {{chemf|O2(-)}} → O−2

Chemical equations:

• {{chemf|2 S + 3 O2 + 2 H2O -> 2 H2SO4}} → 2 S + 3 O₂ + 2 H₂O → 2 H₂SO₄
• {{chemf|2S + 3O2 + 2H2O -> 2H2SO4}} → 2S + 3O₂ + 2H₂O → 2H₂SO₄

The arrows can be written as -> or just →. All characters (and unicode markup) are valid input except \, = (Mediawiki use it), _ and - (endash etc.)

• {{chemf|2 H2(g) + O2(g) -> 2H2O(g)|}} → 2 H₂(g) + O₂(g) → 2H₂O(g)
• {{chemf|NH2RCHCO2H <-> NH3+RCHCO2-}} → NH₂RCHCO₂H ⇌ NH+3RCHCO−2

Hapticity and mu:

• {{chemf|W(CO)3(PiPr3)2(\h{2}H2)}} → W(CO)₃(PiPr₃)₂(η²-H₂)
• {{chemf|W(CO)3(PiPr3)2(\h{2}H2)|auto=yes}} → W(CO)₃(PiPr₃)₂(η²-H₂)

Wikilinks

Whole formula link

Link the whole formula with |link=<wiki pagename>:

• {{chemf|FeCl3|link=iron(III) chloride}} → FeCl₃

Or use wikilink brackets in input like [[ammonia|NH3]]:

• {{chemf|3[[hydrogen|H2]] + 2[[nitrogen|N2]] <-> 2[[ammonia|NH3]]}} → 3H₂ + 2N₂ ⇌ 2NH₃

Link each element (C, Hg) and generic element code (R, X)

Use |auto=yes to link from the first occurrence of each element symbol, and some functional-group symbols such as Ph

• {{chemf|CH3CH2CH3CBrFCIClCH3|auto=yes}} → CH₃CH₂CH₃CBrFCIClCH₃