Diphenylcyanoarsine

Diphenylcyanoarsine

Names
Preferred IUPAC name Diphenylarsinous cyanide
Systematic IUPAC name Diphenylarsanecarbonitrile
Other names Clark 2 Diphenylarsinecarbonitrile Diphenylarsine cyanide Di(phenyl)arsanylformonitrile Diphenylcyanoarsine
Identifiers
CAS Number	23525-22-6 Y
3D model (Jmol)	Interactive image Interactive image
ChemSpider	58070 Y
ECHA InfoCard	100.041.545
EC Number	245-716-6
MeSH	Clark+2
PubChem	64506
InChI InChI=1S/C13H10AsN/c15-11-14(12-7-3-1-4-8-12)13-9-5-2-6-10-13/h1-10H Y Key: BDHNJKLLVSRGDK-UHFFFAOYSA-N Y InChI=1/C13H10AsN/c15-11-14(12-7-3-1-4-8-12)13-9-5-2-6-10-13/h1-10H
SMILES C1=CC=C(C=C1)[As](C#N)C2=CC=CC=C2 N#C[As](C1=CC=CC=C1)C1=CC=CC=C1
Properties
Chemical formula	C13H10AsN
Molar mass	255.002920742 g mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Diphenylcyanoarsine, also called Clark 2 (Chlor-Arsen-Kampfstoff 2, being the successor of Clark 1) by the Germans, was discovered in 1918 by Sturniolo and Bellinzoni^[1] and shortly thereafter used like the related Clark 1 gas by the Germans for chemical warfare in the First World War. The substance causes nausea, vomiting and headaches. It can subsequently lead to e.g. pulmonary oedema (fluid on the lungs).

See also

• Clark 1
• Chemical weapons

References

1. ↑ Sturniolo, G. und Bellinzoni , G. (1919); Boll. chim. pharm., 58, 409–410