Chelates of ß-Diketones. VI.
Synthesis and Characterization of Dimeric Dialkoxo-Bridged Iron(III) Complexes
with Acetylacetone and 2,2,6,6-Tetramethylheptane-3,5-dione (HDPM)
| Chin-Hua S. Wu1, George R.
Rossman1, Harry B.
Gray1, George S. Hammond1, Harvey J. Schugar2 1California Institute of Technology 2Rutgers University |
A series of compounds assigned the
structure [L2FeOR]2 where L is the enolate of
acetylacetone or dipivaloylmethane (HDPM) and R is CH3, C2H5,
and i-C3H7 has been prepared and characterized. They are obtained
by the oxidation of ferrous compounds in alcoholic solutions containing free
ligand and bases or directly from ferric compounds. These dimers are weakly
antiferromagnetic ( -J = 10 cm-1). Their infrared and optical
spectroscopic properties are reported.