 | |
| Names | |
|---|---|
| Other names Claus' salt, Pentaamminechlororhodium dichloride, chloropentaamminerhodium dichloride, chloropentaamminerhodium chloride, chloropentamminerhodium(III) dichloride, chloropentamminerhodium(III) chloride | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.034.082 |
| EC Number |
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| |
| |
| Properties | |
| [RhCl(NH3)5]Cl2 | |
| Appearance | yellow solid |
| Hazards | |
| GHS labelling: | |
 | |
| Warning | |
| H315,H319,H335 | |
| P261,P264,P271,P280,P302+P352,P304+P340,P305+P351+P338,P312,P321,P332+P313,P337+P313,P362,P403+P233,P405,P501 | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Pentamminechlororhodium dichloride is the dichloride salt of thecoordination complex[RhCl(NH3)5]2+. It is a yellow, water-soluble solid. The salt is an intermediate in the purification of rhodium from its ores.
As shown by X-ray crystallography, the salt consists of theoctahedral complex[RhCl(NH3)5]2+ and two chloridecounterions.[1] It forms from the reaction ofrhodium trichloride and ammonia in ethanol.[2] Two chloride anions are labile, whereas the coordinated chloride ligand is not.
Treatment of[RhCl(NH3)5]Cl2 with zinc dust in the presence of ammonia gives the hydride complex [RhH(NH3)5]2+.[2][3]