Ammonium hexaiodoplatinate(IV) is an inorganic compound with the chemical formula (NH4)2[PtI6]. It forms dark-red, cubic crystals.
Preparation
Ammonium hexaiodoplatinate can be prepared by heating platinum tetraiodide or hexachloroplatinic acid in a saturated solution of ammonium iodide in the presence of hydroiodic acid and iodine.[1]
Chemical properties
The compound is unstable and decomposes in aqueous solutions:
- (NH4)2[PtI6] → 2NH4I + PtI4
References
- 1 2 3 Thiele, Gerhard; Mrozek, Christian; Kämmerer, Dieter; Wittmann, Kurt (1983-08-01). "Über Hexaiodoplatinate(IV) M2PtI6 (M = K, Rb, Cs, NH4, Tl) Darstellungsverfahren, Eigenschaften und Kristallstrukturen / On Hexaiodoplatinates(IV) M2PtI6 (M = K, Rb, Cs, NH4, Tl) -Preparation, Properties and Structural Data". Zeitschrift für Naturforschung B. 38 (8): 905–910. doi:10.1515/znb-1983-0802. ISSN 1865-7117.
Further reading
- Nakamura, Daiyu; Kubo, Masaji (1 May 2002). "Pure Quadrupole Resonance of Halogens in Some R2[MX6] Type Complexes". ACS Publications. 68 (10): 2986–2991. doi:10.1021/j100792a043. Retrieved 21 February 2025.
- McElroy, Robert G. C; Hwang, James Y; Armstrong, Robin L (15 January 1980). "Temperature dependence of the 127I nuclear quadrupole resonance frequency in (NH4)2PtI6". Journal of Magnetic Resonance. 37 (1): 49–52. doi:10.1016/0022-2364(80)90092-X. ISSN 0022-2364. Retrieved 21 February 2025.