Disodium tetracarbonylferrate

Disodium tetracarbonylferrate
Names
	IUPAC name Disodium tetracarbonylferrate
	Other names Disodium iron tetracarbonyl; Collman's reagent;
Identifiers
CAS Number	14878-31-0 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.035.395
EC Number	238-951-0;
PubChem CID	73357794;
	InChI InChI=1S/4CHO.Fe.2Na/c41-2;;;/h41H;;;/q4-1;+2;2+1 Key: JSMIGIAJTPRDEQ-UHFFFAOYSA-N;
	SMILES [Na+].[Na+].[O+]#[C][Fe-6]([C]#[O+])([C]#[O+])[C]#[O+];
Properties
Chemical formula	Na2[Fe(CO)4]
Molar mass	213.865 g·mol−1
Appearance	Colorless solid
Density	2.16 g/cm3, solid
Solubility in water	Decomposes
Solubility	tetrahydrofuran, dimethylformamide, dioxane
Structure
Crystal structure	Distorted tetrahedron
Coordination geometry	Tetrahedral
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Pyrophoric
Related compounds
Related compounds	Iron pentacarbonyl
	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

Disodium tetracarbonylferrate is the organoiron compound with the formula Na₂[Fe(CO)₄]. It is always used as a solvate, e.g., with tetrahydrofuran or dimethoxyethane, which bind to the sodium cation. An oxygen-sensitive colourless solid, it is a reagent in organometallic and organic chemical research. The dioxane solvated sodium salt is known as Collman's reagent, in recognition of James P. Collman, an early popularizer of its use.