Arsonium

Arsonium
Names
	Systematic IUPAC name Arsonium
Identifiers
CAS Number	53250-40-1;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30272;
ChemSpider	4574016;
Gmelin Reference	322800
PubChem CID	5460506;
CompTox Dashboard (EPA)	DTXSID10420093 ;
	InChI InChI=1S/AsH4/h1H4/q+1 Key: VUEDNLCYHKSELL-UHFFFAOYSA-N;
	SMILES [AsH4+];
Properties
Chemical formula	AsH+; 4
Molar mass	78.954 g·mol−1
Conjugate base	Arsine
Structure
Molecular shape	Tetrahedral
Related compounds
Related compounds	ammonium; phosphonium
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The arsonium cation is a positively charged polyatomic ion with the chemical formula AsH⁺
₄. An arsonium salt is a salt containing either the arsonium (AsH⁺
₄) cation, such as arsonium bromide (AsH⁺
₄Br⁻
) and arsonium iodide (AsH⁺
₄I⁻
), which can be synthesized by reacting arsine with hydrogen bromide or hydrogen iodide.^[1] Or more commonly, as organic derivative such as the quaternary arsonium salts Ph
₄As⁺
Cl⁻
(CAS: 123334-18-9 , hydrate form) and the zwitterionic compound arsenobetaine.

Structure of quaternary arsonium compound arsenobetaine.

References

^ Muñoz-Hernández, M. Á. (2006). Arsenic: Inorganic Chemistry. Encyclopedia of Inorganic Chemistry. pp 4. DOI: 10.1002/0470862106.ia013

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[1] Muñoz-Hernández, M. Á. (2006). Arsenic: Inorganic Chemistry. Encyclopedia of Inorganic Chemistry. pp 4. DOI: 10.1002/0470862106.ia013

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