Tetramesityldiiron

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

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)₂ pyridine ₂. 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

References

1. Müller, Hardy; Seidel, Wolfgang; Görls, Helmar (1993). "Chemistry of dimesityliron. VI. The structure of tetramesityldiiron". Journal of Organometallic Chemistry. 445: 133–6. doi:10.1016/0022-328X(93)80198-K.
2. Klose, Alain; Solari, Euro; Floriani, Carlo; Chiesi-Villa, Angiola; Rizzoli, Corrado; Re, Nazzareno (1994). "Magnetic Properties Diagnostic for the Existence of Iron(II)-Iron(II) Bonds in Dinuclear Complexes Which Derive from Stepwise Insertion Reactions on Unsupported Iron-Aryl Bonds". J. Am. Chem. Soc. 116 (20): 9123–9135. Bibcode:1994JAChS.116.9123K. doi:10.1021/ja00099a030.
3. Martinez, Gabriel Espinosa; Killion, Jack A.; Jackson, Bailey J.; Fout, Alison R. (2018). "Sterically Crowded σ- and π-Bonded Metal Aryl Complexes". Inorganic Syntheses. Vol. 36. pp. 50–55. doi:10.1002/9781119477822.ch4. ISBN   978-1-119-47782-2. S2CID   104749729.