Tetramesityldiiron

Tetramesityldiiron is an organoiron tetramesityl compound with the formula Fe₂(C₆H₂(CH₃)₃)₄. It is a red, air-sensitive solid that is used as a precursor to other iron complexes. It adopts a centrosymmetric structure.^[1] The complex is a Lewis acid, forming monomeric adducts, e.g. Fe(C₆H₂(CH₃)₃)₂pyridine₂. The complex is prepared by treating ferrous halides with the Grignard reagent formed from mesityl bromide:^[2][3]

2 FeCl₂ + 4 BrMgC₆H₂(CH₃)₃ → Fe₂(C₆H₂(CH₃)₃)₄ + 2 MgBrCl

Tetramesityldiiron

Names
Other names dimesityliron
Identifiers
CAS Number	158100-80-2 (monomer): 59774-47-9
3D model (JSmol)	(monomer): Interactive image
ChemSpider	9138201
PubChem CID	10962987 (monomer): 12826882
InChI (monomer): InChI=1S/2C9H11.Fe/c2*1-7-4-8(2)6-9(3)5-7;/h2*4-5H,1-3H3;/q2*-1;+2 Key: JEIASHLOEHTPQS-UHFFFAOYSA-N
SMILES (monomer): c1(C)cc(C)cc(C)c1[Fe]c2c(C)cc(C)cc2(C)
Properties
Chemical formula	C36H44Fe2
Appearance	red solid
Density	1.19 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references