Discrete tetrairon(III) cluster exhibiting a square-planar Fe4(mu4-O) core: structural and magnetic properties.
The aerobic reaction of the Schiff-base ligand N-(benzimidazol-2-yl)salicylaldimine (Hbisi) with iron(II) perchlorate in methanol leads to the formation of the remarkable coordination compound [Fe(4)(mu(4)-O)(mu-MeO)(4)(bisi)(4)](ClO(4))(2) x 4 MeOH (1), whose single-crystal X-ray structure reveals the presence of a discrete Fe(III)(4)(mu(4)-O) core. Magnetic and Mossbauer studies both show that the exchange interaction within the square tetranuclear iron(III) unit is dominated by the central bridging mu(4)-oxido ligand, the involvement of the mu-methoxido bridges being negligible.
Murali
Mariappan
M
Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
Nayak
Sanjit
S
Sánchez Costa
José
J
Ribas
Joan
J
Mutikainen
Ilpo
I
Turpeinen
Urho
U
Clémancey
Martin
M
Garcia-Serres
Ricardo
R
Latour
Jean-Marc
JM
Gamez
Patrick
P
Blondin
Geneviève
G
Reedijk
Jan
J
D018360:Crystallography, X-Ray; D004583:Electrons; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D008968:Molecular Conformation; D010100:Oxygen / Q000737:chemistry*; D015204:Spectroscopy, Mossbauer
D007501:Iron; D010100:Oxygen