Potassium octacyanomolybdate(IV)

Potassium octacyanomolybdate(IV)
Names
	IUPAC name Potassium octacyanidomolybdate(IV)
	Other names Potassium octacyanomolybdate(IV)
Identifiers
CAS Number	anhydrous: 17456-18-7; dihydrate: 17457-89-5;
3D model (JSmol)	anhydrous: Interactive image; dihydrate: Interactive image;
PubChem CID	dihydrate: 71308809;
	InChI dihydrate: InChI=1S/8CN.4K.Mo.H2O/c81-2;;;;;;/h;;;;;;;;;;;;;1H2/q8-1;4*+1;+4; Key: JJVZTQPHXSHIOV-UHFFFAOYSA-N;
	SMILES anhydrous: [K+].[K+].[K+].[K+].N#C[Mo-4](C#N)(C#N)(C#N)(C#N)(C#N)(C#N)C#N; dihydrate: O.O.[K+].[K+].[K+].[K+].N#C[Mo-4](C#N)(C#N)(C#N)(C#N)(C#N)(C#N)C#N;
Properties
Chemical formula	K4[Mo(CN)8]
Molar mass	460,47 g/mol (anhydrous) ; 496.5 g/mol (dihydrate)
Appearance	yellow powder
Melting point	>300 °C
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H319, H335
Precautionary statements	P261, P305+P351+P338
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium octacyanomolybdate(IV) is the inorganic salt with the formula K₄[Mo(CN)₈]. A yellow light-sensitive solid, it is the potassium salt of the cyanometalate with the coordination number eight. The complex anion consists of a Mo(IV) center bound to eight cyanide ligands resulting in an overall charge of −4, which is balanced with four potassium cations. The salt is often prepared as its dihydrate K₄[Mo(CN)₈]^.(H₂O)₂.