Ceric ammonium nitrate

Ammonium cerium(IV) nitrate

Names
IUPAC name Diammonium cerium(IV) nitrate
Other names Ceric ammonium nitrate (CAN)
Identifiers
CAS Number	16774-21-3
3D model (Jmol)	Interactive image
ChemSpider	157072
ECHA InfoCard	100.037.100
EC Number	240-827-6
PubChem	180504
InChI InChI=1S/Ce.6NO3.2H3N/c;6*2-1(3)4;;/h;;;;;;;2*1H3/q+4;6*-1;;/p+2 Key: XMPZTFVPEKAKFH-UHFFFAOYSA-P InChI=1/Ce.6NO3.2H3N/c;6*2-1(3)4;;/h;;;;;;;2*1H3/q+4;6*-1;;/p+2 Key: XMPZTFVPEKAKFH-SKRXCDHZAV
SMILES [Ce+4].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH4+].[NH4+]
Properties
Chemical formula	H8N8CeO18
Molar mass	548.26 g/mol
Appearance	orange-red crystals
Melting point	107 to 108 °C (225 to 226 °F; 380 to 381 K)
Solubility in water	141 g/100 mL (25 °C) 227 g/100 mL (80 °C)
Structure
Crystal structure	Monoclinic
Coordination geometry	Icosahedral
Hazards
GHS pictograms
GHS signal word	Danger
GHS hazard statements	H272, H302, H315, H319, H335
GHS precautionary statements	P220, P261, P305+351+338
EU classification (DSD)	O Xi
R-phrases	R8, R22, R36/37/38
S-phrases	S17, S26, S36
Related compounds
Related compounds	Ammonium nitrate Cerium(IV) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ceric ammonium nitrate (CAN) is the inorganic compound with the formula (NH₄)₂Ce(NO₃)₆. This orange-red, water-soluble cerium salt is a specialised oxidizing agent in organic synthesis and a standard oxidant in quantitative analysis.

The anion [Ce(NO
3)
6]2−
is generated by dissolving Ce
2O
3 in hot concentrated HNO₃.

The salt consists of the anion [Ce(NO
3)
6]2−
and a pair of NH₄⁺ counter ions. The ammonium ions are not involved in the oxidising reactions of this salt. In the anion each nitrate group is chelated to the cerium atom in a bidentate manner as shown below:

The anion [Ce(NO
3)
6]2−
has T_h (idealized O_h) molecular symmetry. The CeO₁₂ core defines an icosahedron.