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Diarsenic tetraiodide
Names
	IUPAC name Arsenic diiodide
Identifiers
CAS Number	13770-56-4 ;
3D model (JSmol)	Interactive image;
PubChem CID	165365657;
CompTox Dashboard (EPA)	DTXSID401045877 ;
	InChI InChI=1S/As.2HI/h;2*1H/p-2 Key: YWEMTIDRPOANDU-UHFFFAOYSA-L;
	SMILES I[As](I)[As](I)I;
Properties
Chemical formula	As2I4
Molar mass	657.461 g/mol
Appearance	Red crystalline solid
Melting point	137 °C (279 °F; 410 K)
Boiling point	380 °C (716 °F; 653 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Diarsenic tetraiodide is an inorganic compound of arsenic and iodine. It is a dark red metastable solid. The compound is a closely related to the better characterized diphosphorus tetraiodide. Identified in the late 19th century with the (accurate) empirical formula AsI₂,^[1] the compound was assigned the formula (As₂I₄) several years later.^[2]

References

^ Bamberger, Eugen; Philipp, Julius (1881). "Ueber Verbindungen von Arsen und Jod". Berichte der Deutschen Chemischen Gesellschaft. 14 (2): 2643–2648. doi:10.1002/cber.188101402228.
^ Hewitt, John Theodore; Winmill, Thomas Field (1907). "LXXXIX.—Arsenic di-iodide". J. Chem. Soc., Trans. 91: 962–964. doi:10.1039/CT9079100962.

Bastow, T.J.; Whitfield, H.J. (1980). "NQR in metal dihalides MX₂". Journal of Magnetic Resonance. 37 (2): 269–274. Bibcode:1980JMagR..37..269B. doi:10.1016/0022-2364(80)90115-8.
Baudler, M.; Stassen, H. -J. (1966). "Beiträge zur Chemie des Arsens. I. Darstellung und Eigenschaften von Diarsen-tetrajodid". Zeitschrift für anorganische und allgemeine Chemie. 343 (5–6): 244. doi:10.1002/zaac.19663430504.
Baudler, M.; Stassen, H. -J. (1966). "Beiträge zur Chemie des Arsens. II. Zur Kenntnis des Reaktiven Verhaltens von Diarsen-tetrajodid". Zeitschrift für anorganische und allgemeine Chemie. 345 (3–4): 182. doi:10.1002/zaac.19663450308.