Hexaammineplatinum(IV) chloride

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Hexaammineplatinum(IV) chloride
IUPAC name
Hexaammineplatinum(IV) chloride
Other names
Platinum hexammine tetrachloride
3D model (JSmol)
  • InChI=1S/4ClH.6H3N.Pt/h4*1H;6*1H3;/q;;;;;;;;;;+4/p-4
  • N.N.N.N.N.N.[Cl-].[Cl-].[Cl-].[Cl-].[Pt+4]
Molar mass 439.07 g·mol−1
Appearance white solid
Melting point decomposes
Solubility soluble in NH3
0 D
Related compounds
Other cations
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Hexaammineplatinum(IV) chloride is the chemical compound with the formula [Pt(NH3)6]Cl4. It is the chloride salt of the metal ammine complex [Pt(NH3)6]4+. The cation features six ammonia (called ammines in coordination chemistry) ligands attached to the platinum(IV) ion. It is a white, water soluble solid.

Properties and structure[edit]

Typical for platinum(IV) complexes, [Pt(NH3)6]4+ is diamagnetic and kinetically inert, e.g. unaffected by strong acids. The cation obeys the 18-electron rule. It is prepared by treatment of methylamine complex [Pt(NH2CH3)4Cl2]Cl2 with ammonia.[1]

The complex [Pt(NH3)6]4+ is a rare example of a tetracationic ammine complex. Its conjugate bases [Pt(NH3)5NH2]3+ and [Pt(NH3)4(NH2)2]2+ have been characterized.[2]


  1. ^ L. N. Essen (1974). "Hexaammineplatinum(IV) Chloride". Inorganic Syntheses. Inorganic Syntheses. Vol. 15. p. 93. doi:10.1002/9780470132463.ch21. ISBN 9780470132463.
  2. ^ B. Klein, L. Heck (1975). "Deprotonierung von Komplexliganden. I. Amidoamminkomplexe des Platin(IV)". Zeitschrift für anorganische Chemie. 416 (3): 269–284. doi:10.1002/zaac.19754160311.