Phenylarsine oxide
From Wikipedia, the free encyclopedia
| |||
| Names | |||
|---|---|---|---|
| IUPAC name
Oxo(phenyl)arsine | |||
| Other names
Phenyl arsenoxide; Oxo(phenyl)arsane | |||
| Identifiers | |||
3D model (JSmol) |
|||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.010.251 | ||
| EC Number |
| ||
PubChem CID |
|||
| UNII | |||
CompTox Dashboard (EPA) |
|||
| |||
| |||
| Properties | |||
| C6H5AsO | |||
| Molar mass | 168.027 g·mol−1 | ||
| Hazards | |||
| GHS labelling: | |||
  | |||
| Danger | |||
| H301, H331, H410 | |||
| P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P321, P330, P391, P403+P233, P405, P501 | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |||
Phenylarsine oxide (PAO or PhAsO) is an organometallic compound with the empirical formula C6H5AsO. It contains a phenyl group and an oxygen atom both bonded to an arsenic atom.
Despite its simple empirical formula, phenylarsine oxide does not contain an As=O double bond. In common with other compounds with the general formula RAsO, PhAsO forms a cyclic oligomer.[1] A range of ring sizes are possible, but PhAsO crystallizes as the tetramer, cyclo-(PhAsO)4.[2] RAsO compounds form these species because for heavy elements such as arsenic, two single bonds to oxygen are more stable than one double bond; see double bond rule for details.