Cm. Grant et al., A NEW STRUCTURAL TYPE IN IRON CARBOXYLATE CLUSTER CHEMISTRY VIA USE OF BIS-BIPYRIDINE LIGANDS - [FE6O4CL4(O2CPH)(4)L-2][FECL4](2), Chemical communications, (16), 1998, pp. 1753-1754
The reaction between FeCl3, NaO2CPh and L [L = 1,2-bis(2,2'-bipyridyl-
6-yl)ethane] in MeCN gives the title complex 1 whose cation contains a
n unusual [Fe-6(mu(3)-O)(4)](10+) core, whereas in MeOH the dinuclear
complex [Fe-2(OMe)(2-)Cl-2(O2CPh)L][FeCl4] 2 is obtained; magnetic stu
dies indicate that the cations of 1 and 2 both have S = 0 ground state
s, consistent with the expected antiferromagnetic exchange interaction
s.