Chromium(II) acetate

Chromium(II) acetate
Names
	IUPAC name Chromium(II) acetate hydrate
	Other names Chromous acetate; Chromium diacetate; Chromium(II) ethanoate;
Identifiers
CAS Number	14976-80-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	107397 ;
ECHA InfoCard	100.224.848
PubChem CID	120304;
RTECS number	AG3000000;
UNII	H3FYF8441T ;
CompTox Dashboard (EPA)	DTXSID50890519 ;
	InChI InChI=1S/2C2H4O2.Cr/c21-2(3)4;/h21H3,(H,3,4);/q;;+2/p-2 Key: LRCIYVMVWAMTKX-UHFFFAOYSA-L ; InChI=1/2C2H4O2.Cr/c21-2(3)4;/h21H3,(H,3,4);/q;;+2/p-2 Key: LRCIYVMVWAMTKX-NUQVWONBAT;
	SMILES [Cr+2]1234([OH2])#[Cr+2]([OH2])(O[C-](C)O1)(O[C-](C)O2)(O(C)[C-]O3)O(C)[C-]O4;
Properties
Chemical formula	C8H16Cr2O10
Molar mass	376.198 g·mol−1
Appearance	brick-red solid
Density	1.79 g/cm3
Melting point	dehydrates
Solubility in water	soluble in hot water, MeOH
Structure
Crystal structure	monoclinic
Coordination geometry	octahedral; counting the Cr–Cr bond
Dipole moment	0 D
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Related compounds
Other cations	Copper(II) acetate; Molybdenum(II) acetate; Rhodium(II) acetate;
Related compounds	Chromium(III) acetate; Chromium acetate hydroxide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Chromium(II) acetate hydrate, also known as chromous acetate, is the coordination compound with the formula Cr₂(CH₃CO₂)₄(H₂O)₂. This formula is commonly abbreviated Cr₂(OAc)₄(H₂O)₂. This red-coloured compound features a quadruple bond. It exists as the dihydrate and the anhydrous forms. Both are diamagnetic.

Cr₂(OAc)₄(H₂O)₂ is a reddish diamagnetic powder, although diamond-shaped tabular crystals can be grown. Consistent with the fact that it is nonionic, Cr₂(OAc)₄(H₂O)₂ exhibits poor solubility in water and methanol.