Cacodyl oxide

Cacodyl oxide
	Ball-and-stick model of cacodyl oxide
	Line structure model of cacodyl oxide
Names
	Preferred IUPAC name Dimethylarsinous anhydride
	Other names TL-297
Identifiers
CAS Number	503-80-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	10002 ;
ECHA InfoCard	100.376.169
PubChem CID	10431;
CompTox Dashboard (EPA)	DTXSID70198307 ;
	InChI InChI=1S/C4H12As2O/c1-5(2)7-6(3)4/h1-4H3 Key: LOKPKYSOCCPWIZ-UHFFFAOYSA-N ; InChI=1/C4H12As2O/c1-5(2)7-6(3)4/h1-4H3 Key: LOKPKYSOCCPWIZ-UHFFFAOYAL;
	SMILES C[As](C)O[As](C)C;
Properties
Chemical formula	C4H12As2O
Molar mass	255.98 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Cacodyl oxide is a chemical compound of the formula [(CH₃)₂As]₂O. This organoarsenic compound is primarily of historical significance since it is sometimes considered to be the first organometallic compound synthesized in relatively pure form.^[1]^[2]

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"Cadet's fuming liquid", which is composed of cacodyl and cacodyl oxide, was originally synthesized by heating potassium acetate with arsenic trioxide. It has a disagreeable odor and is toxic.

The molecular structure of [Ph₂As]₂O (Ph = phenyl), the tetraphenyl analogue of cacodyl oxide, has been established by X-ray crystallography.^[3]

See also