Pentaamminechlororhodium dichloride

Pentaamminechlororhodium dichloride
Names
	Other names Pentaamminechlororhodium dichloride, chloropentaamminerhodium dichloride, chloropentaamminerhodium chloride, chloropentamminerhodium(III) dichloride, chloropentamminerhodium(III) chloride
Identifiers
CAS Number	13820-95-6;
ECHA InfoCard	100.034.082
Properties
Chemical formula	[RhCl(NH3)5]Cl2
Appearance	yellow solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Pentamminechlororhodium dichloride is the inorganic compound with the formula [RhCl(NH₃)₅]Cl₂. This yellow solid is an intermediate in the purification of rhodium from its ores.

As shown by X-ray crystallography, the salt consists of the octahedral complex [RhCl(NH₃)₅]²⁺ and two chloride counterions.^[1] It forms from the reaction of rhodium trichloride and ammonia in ethanol.^[2] Two chloride anions are labile, whereas the coordinated chloride ligand is not.

References

↑ Hambley, Trevor W.; Lay, Peter A. (1986). "Comparisons of π-bonding and hydrogen bonding in isomorphous compounds: [M(NH₃)₅Cl]Cl₂ (M = Cr, Co, Rh, Ir, Ru, Os)". Inorganic Chemistry. 25: 4553–8. doi:10.1021/ic00245a020.
↑ J. A. Osborn, K. Thomas, G. Wilkinson. "Pentaamminechlororhodium(III) Dichloride and Pentaamminehydridorhodium(III) Sulfate". Inorg. Synth. 13: 213–215. doi:10.1002/9780470132449.ch43.

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[1] Hambley, Trevor W.; Lay, Peter A. (1986). "Comparisons of π-bonding and hydrogen bonding in isomorphous compounds: [M(NH₃)₅Cl]Cl₂ (M = Cr, Co, Rh, Ir, Ru, Os)". Inorganic Chemistry. 25: 4553–8. doi:10.1021/ic00245a020.

[2] J. A. Osborn, K. Thomas, G. Wilkinson. "Pentaamminechlororhodium(III) Dichloride and Pentaamminehydridorhodium(III) Sulfate". Inorg. Synth. 13: 213–215. doi:10.1002/9780470132449.ch43.