1-Butyl-3-methylimidazolium tetrachloroferrate

1-Butyl-3-methylimidazolium tetrachloroferrate is a magnetic ionic liquid. It can be obtained from 1-butyl-3-methylimidazolium chloride and ferric chloride. It has quite low water solubility.^[1][2]

1-Butyl-3-methylimidazolium tetrachloroferrate

Identifiers
CAS Number	359845-21-9
3D model (JSmol)	Interactive image
ChemSpider	9849184
ECHA InfoCard	100.203.250
EC Number	678-175-3
PubChem CID	11674455
CompTox Dashboard (EPA)	DTXSID0049282
InChI InChI=1S/C8H15N2.4ClH.Fe/c1-3-4-5-10-7-6-9(2)8-10;;;;;/h6-8H,3-5H2,1-2H3;4*1H;/q+1;;;;;+3/p-4 Key: FYHLFBVHUIJIII-UHFFFAOYSA-J
SMILES CCCCN1C=C[N+](=C1)C.Cl[Fe-](Cl)(Cl)Cl
Properties
Chemical formula	C8H15Cl4FeN2
Molar mass	336.87 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Due to the presence of the high spin FeCl₄ anion, the liquid is paramagnetic and a magnetic susceptibility of 40.6 × 10⁻⁶ emu g⁻¹ is reported. A simple small neodymium magnet suffices to attract the liquid in a test tube.