[{Fe(tim)}2]: an Fe-Fe dimer containing an unsupported metal-metal bond and redox-active N4 macrocyclic ligands.
Mixed doubles: The dimeric complex [{Fe(tim)}(2)] (see structure, tim = 2,3,9,10-tetramethyl-1,4,8,11-tetraazacyclotetradeca-1,3,8,10-tetraene) represents an unprecedented complex containing an unsupported Fe-Fe bond. The crystal structure confirms the presence of reduced tim units, thus indicating ligand redox activity. Spectroscopic and computational studies establish a triplet ground state for [{Fe(tim)}(2)] and suggest a mixed-valence compound with respect to both the Fe ions and the ligands.
Max Planck Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.
Corinna R
CR
Hess
Thomas
T
Weyhermüller
Eckhard
E
Bill
Karl
K
Wieghardt
D005296:Ferrous Compounds / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008024:Ligands; D047028:Macrocyclic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction
C541180:Fe(2,3,9,10-tetramethyl-1,4,8,11-tetraazacyclotetradeca-1,3,8,10-tetraene)(2); D005296:Ferrous Compounds; D008024:Ligands; D047028:Macrocyclic Compounds; D007501:Iron