Ammonium diethyl dithiophosphate
Ammonium diethyl dithiophosphate or more systematically ammonium O,O′-diethyl dithiophosphate, is the ammonium salt of diethyl dithiophosphoric acid. It is used as a source of the (C2H5O)2PS2− ligand in coordination chemistry and in analytical chemistry for determination of various ions. It can be obtained by the reaction of phosphorus pentasulfide with ethanol and ammonia. In crystal structure of this compound the ammonium cation is connected by four charge-assisted N—H···S hydrogen bonds to four tetrahedral diethyl dithiophosphate anions.[1]
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| Names | |
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| IUPAC name
Azanium; diethoxy-sulfanylidene-sulfido-λ5-phosphane | |
| Other names
Ammonium O,O′-diethyldithiophosphate; Ammonium O,O-diethyl phosphorodithioate; Ammonium O,O-diethyl dithiophosphate; Ammonium O,O-diethyl diethiophosphate; Phosphorodithioic acid, O,O-diethyl ester, ammonium salt | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.012.676  |
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CompTox Dashboard (EPA) |
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| Properties | |
| C4H14NO2PS2 | |
| Molar mass | 203.25 g·mol−1 |
| Appearance | White to yellowish crystals |
| Melting point | 438 K (165 °C) |
| Hazards | |
| GHS pictograms |  |
| GHS Signal word | Warning |
| H302, H312, H332 | |
| P261, P264, P270, P271, P280, P301+312, P302+352, P304+312, P304+340, P312, P322, P330, P363, P501 | |
| NFPA 704 (fire diamond) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
References
- Okuniewski, Andrzej; Becker, Barbara (2011). "Ammonium O,O′-diethyl dithiophosphate". Acta Crystallogr. E. 67 (7): o1749–o1750. doi:10.1107/S1600536811022811. PMC 3151957. PMID 21837134.
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