Magnetic, electrochemical and spectroscopic properties of iron(iii) aminebis(phenolate) halide complexesElectronic supplementary information (ESI) available. CCDC reference numbers 847891 (H2L4), 847892 (1b), 847893 (2b), 847894 (4b) contain the supplementary crystallographic data for this paper. For ESI and crystallographic data in CIF or other electronic format. See DOI: 10.1039/c2dt12242a

• Main Authors: Dean, Rebecca K, Fowler, Candace I, Hasan, Kamrul, Kerman, Kagan, Kwong, Philip, Trudel, Simon, Leznoff, Daniel B, Kraatz, Heinz-Bernard, Dawe, Louise N, Kozak, Christopher M
• Format: Article
• Language: English
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c2dt12242a

Eight new iron( iii ) aminebis(phenolate) complexes are reported. The reaction of anhydrous FeX 3 salts (where X = Cl or Br) with the diprotonated tripodal tetradentate ligands 2-tetrahydrofurfurylamino- N , N -bis(2-methylene-4,6-di- tert -butylphenol), H 2 L1 , 2-tetrahydrofurfurylamino- N , N -bis(2-methylene-4-methyl-6- tert -butylphenol), H 2 L2 , and 2-methoxyethylamino- N , N -bis(2-methylene-4,6-di- tert -butylphenol), H 2 L3 , 2-methoxyethylamino- N , N -bis(2-methylene-4-methyl-6- tert -butylphenol), H 2 L4 produces the trigonal bipyramidal iron( iii ) complexes, L1 FeCl ( 1a ), L1 FeBr ( 1b ), L2 FeCl ( 2a ), L2 FeBr ( 2b ), L3 FeCl ( 3a ), L3 FeBr ( 3b ), L4 FeCl ( 4a ), and L4 FeBr ( 4b ). All complexes have been characterized using electronic absorption spectroscopy, cyclic voltammetry and room temperature magnetic measurements. Variable temperature magnetic data were acquired for complexes 2b , 3a and 4b . Variable temperature Mssbauer spectra were obtained for 2b , 3a and 4b . Single crystal X-ray molecular structures have been determined for proligand H 2 L4 and complexes 1b , 2b , and 4b . Iron( iii ) halide complexes of tripodal aminebis(phenolate)ether ligands display subtle variations in electronic behaviour depending on the nature of the pendant ether donor and halide ligand.