Template:Chem2

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{{chem2}} is a template used to format a chemical formula or equation.

Use

Symbol	Gives	Example	Output
\s	−	{{chem2|CH3\sCH3}}	CH 3−CH 3
\d	=	{{chem2|CH2\dCH2}}	CH 2=CH 2
\t	≡	{{chem2|HC\tCH}}	HC≡CH
\q	≣	{{chem2|[Cl4Re\qReCl4](2−)|}}	[Cl 4Re≣ReCl 4]2−
\-	-
\\	\
\h	η
\h{1}	η1-
\m{1}	μ1-
->	→	{{chem2|2H2 + O2 -> 2H2O}}	2H 2 + O 2 → 2H 2O
<->	⇌
*	·	{{chem2|CoCl2*6H2O}}	CoCl 2·6H2O
\*	*	{{chem2|Cp\*2Fe}}	Cp* 2Fe
_{}		{{chem2|CH4_{(g)}|}} *	CH 4 (g)
^{}		{{chem2|^{13}CH4}}	13 CH 4
&nabla;	∇	{{chem2|&nabla;}}	∇

^ If the last character of the template input is }, MediaWiki will confuse it with the end-of-template tag }}. Adding | between the two resolves this ambiguity. Other options include instead inserting (space), {{null}} or <nowiki/>.

Formulas (without charge) are just written. Eg.:

• {{chem2|CH3(CH2)5CH3}} gives CH
  3(CH
  2)
  5CH
  3
• {{chem2|Fe3S2(CO)9}} gives Fe
  3S
  2(CO)
  9
• {{chem2|C_{''n''}H_{2''n''+2}|}} gives C
  nH
  2n+2

Charges are written inside parenthesis, otherwise it's treated as +1 or −1, e.g.:

• {{chem2|Na+}} gives Na+
  
• {{chem2|O2-}} gives O−
  2 but can be written as {{chem2|O2(-)}} too.
• {{chem2|SO4(2-)}} gives SO2−
  4
• {{chem2|S19(2+)}} gives S2+
  19

Chemical equations can be written too. E.g.:

• {{chem2|2 S + 3 O2 + 2 H2O -> 2 H2SO4}} gives 2 S + 3 O
  2 + 2 H
  2O → 2 H
  2SO
  4
• {{chem2|2S + 3O2 + 2H2O -> 2H2SO4}} gives 2S + 3O
  2 + 2H
  2O → 2H
  2SO
  4

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

• {{chem2|2 H2_{(g)} + O2_{(g)} -> 2H2O_{(g)}|}} gives 2 H
  2
  (g) + O
  2
  (g) → 2H
  2O
  (g)
• {{chem2|NH2RCHCO2H <-> NH3+RCHCO2-}} gives NH
  2RCHCO
  2H ⇌ NH+
  3RCHCO−
  2

Hapticity and mu:

• {{chem2|W(CO)3(PiPr3)2(\h{2}H2)}} gives W(CO)
  3(PiPr
  3)
  2(η²-H
  2)
• {{chem2|auto=yes|W(CO)3(PiPr3)2(\h{2}H2)}} gives W(CO)
  3(PiPr
  3)
  2(η²-H
  2)

Links: Use link=<wiki page> or ordinary wiki link ([[ and ]]), e.g.:

• {{chem2|link=Iron(III) chloride|FeCl3}} gives FeCl
  3
• {{chem2|3[[hydrogen|H2]] + 2[[nitrogen|N2]] <-> 2[[ammonia|NH3]]}} gives 3H
  2 + 2N
  2 ⇌ 2NH
  3

Auto links: Automatic link elements: Use auto=<something> (e.g. yes):

• {{chem2|auto=yes|CH3CH2CH3CBrFCIClCH3}} gives CH
  3CH
  2CH
  3CBrFCIClCH
  3

Examples

• {{chem2|[Cl4Re\qReCl4](2−)|}} gives [Cl
  4Re≣ReCl
  4]²⁻
• {{chem2|[Cl4Re\qReCl4](2-)|}} gives [Cl
  4Re≣ReCl
  4]²⁻
• {{chem2|NH2RCHCO2H <-> NH3+RCHCO2−}} gives NH
  2RCHCO
  2H ⇌ NH+
  3RCHCO−
  2

---

• {{chem2|\\hallo}} gives \hallo
• {{chem2|H3CC\tCH <-> H2C\dC\dCH2}} gives H
  3CC≡CH ⇌ H
  2C=C=CH
  2
• {{chem2|4 NH3 + 5 O2 -> 4 NO + 6 H2O}} gives 4 NH
  3 + 5 O
  2 → 4 NO + 6 H
  2O

---

• "H2O &#8594; H2O" is H
  2O → H
  2O
• "H2O_{(l)} -> H2O_{(g)}" is H
  2O
  (l) → H
  2O
  (g)

---

• "4 NH3 + 5 O2 → 4 NO + 6 H2O" is 4 NH
  3 + 5 O
  2 → 4 NO + 6 H
  2O
• " 4 NH3 + 5 O2 → 4 NO + 6 H2O" is 4 NH
  3 + 5 O
  2 → 4 NO + 6 H
  2O
• " 4NH3 + 5O2 → 4NO + 6H2O" is 4NH
  3 + 5O
  2 → 4NO + 6H
  2O
• " 2Mn2(+)" is 2Mn+
  2
• " 2Mn2(+) + 3H2O" is 2Mn+
  2 + 3H
  2O
• Mn– is Mn−
  

---

• Mn2(2-) is Mn2−
  2
• Mn2☃+ is Mn
  2☃+
  , Mn2(2–) is Mn2−
  2, Mn2(2☃–) is Mn
  2(
  2☃−
  )
• Mn2(+) is Mn+
  2
• Mn2+ is Mn+
  2
• Mn2(-) is Mn−
  2
• Mn2- is Mn−
  2

---

• {{chem2|C_{''n''}H_{2''n'' + 2}|}} gives C
  nH
  2n + 2
• {{chem2|C_{abc}|}} gives C
  abc
• (chem gives C
  _nH
  _2n + 2)
• {{chem2|CoCl2*1.5H2O}} gives CoCl
  2·1.5H₂O
• Mn22– is Mn−
  22
• Cu2C2*H2O is Cu
  2C
  2·H₂O

---

Special

• {{chem2|[Me2Al(\m{2}Me)]2}} gives [Me
  2Al(μ²-Me)]
  2
• {{chem2|^{13}CO2}} gives 13
  CO
  2
• {{chem2|auto=yes|^{13}CO2}} gives 13
  CO
  2
• {{chem2|\h{5}(C5H5)2TiCl2}} gives η⁵-(C
  5H
  5)
  2TiCl
  2
• {{chem2|\h{5}\s(C5H5)}} gives η⁵-−(C
  5H
  5)
• {{chem2|CH2\dCH2\sCH2\sC\tCH\qMn}} is CH
  2=CH
  2−CH
  2−C≡CH≣Mn

---

• {{chem2|RC(OR’)3}} gives RC(OR’)
  3
• {{chem2|C\\C}} gives C\C
• {{chem2|C2*NH3}} gives C
  2·NH
  3
• {{chem2|C2*2NH3}} gives C
  2·2NH
  3
• {{chem2|C1.2H3.5}} gives C
  1.2H
  3.5

---

• {{chem2|12|6|C}} is 12
• {{chem2|12|C}} is 12
• {{chem2|CH3\i{13}CH2CH3}} is CH
  3CH
  2CH
  3
• {{chem2|\{\{abc\}\}}} is AbC
• C2(μ\-C) is C
  2(μ-C)

---

• SO4(2-) is SO2−
  4
• 2Mn2(2+) is 2Mn2+
  2
• CH3-CH2-OH is CH−
  3CH−
  2OH
• [ZnCl4]- is [ZnCl
  4]−
  
• [ZnCl4](2-) is [ZnCl
  4]²⁻
• AUTO: ((H2O)5{CoCl2})2 is ((H
  2O)
  5{CoCl
  2})
  2
• Si(OH)4 is Si(OH)
  4

---

• AUTO: Cu2C2*H2O is Cu
  2C
  2·H₂O
• Cu2C2*2H2O is Cu
  2C
  2·2H₂O
• CuSO*2H2O is CuSO·2H₂O
• CuSO4*15H2O is CuSO
  4·15H₂O
• CuSO4(H2O)5 is CuSO
  4(H
  2O)
  5
• H+ + OH- → H2O is H+
  + OH−
  → H
  2O
• H → O is H → O

---

• ZxPo4 is ZxPo
  4     Unknown element.
• ((Na)Cl is ((Na)Cl     Too many "(".
• Si(OH))4 is Si(OH))
  4     Too many ")".
• Si&☃Si is Si&☃Si
• CH
  2=CH
  2

More

• {{chem2|Cl2O6|link=dichlorine hexoxide}} is Cl
  2O
  6
• [Fe(Phen)(Phen)3](2+) is [Fe(Phen)(Phen)
  3]²⁺
• AUTO: [Fe(Phen)(Phen)3](2+) is [[[:en:Iron|Fe]](Phen)(Phen)
  3]²⁺
• {{chem2|[C2O2](2+)}} is [C
  2O
  2]²⁺
• {{chem2|link=Tomato|SI4}} is SI
  4
• H2SO4+ is H
  2SO+
  4
• Mn- is Mn−
  
• Mn22+ is Mn+
  22, Mn22- is Mn−
  22,
• Mn(2+) is Mn²⁺
• Mn2(+) is Mn+
  2
• Mn(22-) is Mn²²⁻
• Mn3(22-) is Mn22−
  3
• Mn(22+) is Mn²²⁺
• Mn2(22+) is Mn22+
  2
• Mn2(2+) is Mn2+
  2
• Mn22(2+) is Mn2+
  22

Chem vs chem2

• (CH
  ₃)
  ₂CO     Chem
• (CH
  3)
  2CO     Chem2
• H⁺
  ₂     Chem
• H+
  2     Chem2

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. Click here to see a monthly parameter usage report for this template based on this TemplateData.

TemplateData for Chem2

No description.

Template parameters[Edit template data]

Parameter		Description	Type	Status
1	1	no description	Unknown	optional
auto	auto	no description	Unknown	optional
link	link	no description	Unknown	optional

See also

• {{Chem}}
• {{Chemical formula}}
• <chem>, WP:MATHCHEM — by TeX

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