Iron complexes salicylaldimine

Shyu et al. used sodium hypochlorite (NaOCl) for the epoxidation of cis-stilbene with iron complexes with salicyladimine ligands, [FefL lClJ-CMjCN and [Fe(L )CI(H20)] l/3CH3Cl [HjL. - 1,1 -dimethylethylene)bis(salicylaldimine),... 

Salicylaldimine complexes of iron(III) catalyze epoxidation of stilbene by hypochlorite. ... 

Spin cross-over behavior has been established for a number of Schiff base complexes of iron(III) complexes with N402-donor sets. A two-step spin cross-over in the warming direction for [Fe A-(8-quinolyl)salicylaldiminate 2](NCSe) has been ascribed to intermolecular TT-interactions between aromatic rings. Usually spin cross-over in these N402-complexes is... 

The state of aggregation of the solute may depend upon the solvent and so lead to solvent dependent spectral changes. In solutions of Fe ions there has been uncertainty whether the species present were monomeric, dimeric or larger aggregates. In strongly co-ordinating solvents iron(III) complexes seem to be monomeric, except in the presence of alkali. Dimeiisation in such poorly co-ordinating solvents as ether, benzene, or toluene may result from the presence of traces of moisture. Scrupulously dry solutions of ferric chloride and TV-substituted salicylaldimine complexes of iron(III) in these and similar solvents are monomeric, but traces of moisture cause the latter at least to dimerise. ... 

More recently, Lemaire and coworkers observed spin crossover between S = 3/2 and S = 5/2 in nonporphyrin complexes, that is, the iron(lll) complexes of 3-ethynylthienyl-substituted N-(8-quinolyl)salicylaldimine by means of Mossbauer spectroscopy, SQUID, and EPR methods[80]. At 293 K, the Mossbauer spectrum of the PF5 complex shows two sets of doublets with very different QS values IS and QS values for one set of doublets are 0.41 and 0.66 mm s while they are 0.14 and 2.56 mm s for the other with the population ratio of 73.6 26.4. The ratio changes to 23 77 as the temperature is lowered to 5.8 K. The result clearly indicates spin crossover from S = 5/2 to S = 3/2. 

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