Ammonium hexabromoplatinate
| Names | |
|---|---|
| IUPAC name
Ammonium hexabromoplatinate | |
Other names
| |
| Identifiers | |
3D model (JSmol) |
|
| ECHA InfoCard | 100.037.615 |
| EC Number |
|
PubChem CID |
|
CompTox Dashboard (EPA) |
|
| |
| |
| Properties[1] | |
| (NH4)2PtBr6 | |
| Molar mass | 710.586 g·mol−1 |
| Appearance | red-brown solid |
| Density | 4.26 g/mL |
| Melting point | 145 °C (293 °F; 418 K) (decomposes) |
| poorly soluble | |
| Structure[2] | |
| cubic | |
| Fm3m | |
a = 10.2917 Å α = 90°, β = 90°, γ = 90° | |
| Hazards | |
| GHS labelling:[3] | |
 | |
| Warning | |
| H302, H312, H315, H319, H332, H335 | |
| P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Ammonium hexabromoplatinate is an inorganic compound with the chemical formula (NH4)2PtBr6.
Structure
Ammonium hexabromoplatinate adopts a face centered cubic structure. A phase transition occurs at 57.4 K (−215.8 °C; −356.3 °F); this does not occur in the related hexachloroplatinate complex.[4]
References
- ↑ Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 23. ISBN 978-1-4398-1462-8.
- ↑ Sutton, Mark; Armstrong, Robin L.; Powell, Brian M.; Buyers, William J. L. (March 1981). "Neutron diffraction study of the structural changes in the antifluorite crystals Rb2PtI6, (NH4)2PtBr6, and (NH4)2PtI6". Canadian Journal of Physics. 59 (3): 455. doi:10.1139/p81-056. ISSN 0008-4204.
- ↑ PubChem. "Platinate(2-), hexabromo-, ammonium (1:2), (OC-6-11)-". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-04-17.
- ↑ Weir, Ron D.; Westrum, Jr, Edgar F. (February 2002). "Thermodynamics, phase transitions and crystal structure of ammonium hexahalides: comparative study of the heat capacity and thermodynamic properties of (NH ) PtCl , (ND ) PtCl , (NH ) PtBr , (ND ) PtBr , (NH ) PdCl , (ND ) PdCl , (NH ) TeCl , (ND ) TeCl , and (NH ) RuCl from 5 K to 350 K". The Journal of Chemical Thermodynamics. 34 (2): 143–145. doi:10.1006/jcht.2001.0910.