Solution and solid state properties of Fe(III) complexes bearing N-ethyl-N-(2-aminoethyl)salicylaldiminate ligands
作者:Paulo N. Martinho、Ana I. Vicente、Sara Realista、Marta S. Saraiva、Ana I. Melato、Paula Brandão、Liliana P. Ferreira、Maria de Deus Carvalho
DOI:10.1016/j.jorganchem.2013.12.028
日期:2014.6
low-spin (LS) state, complex 6 displays a gradual and incomplete spin crossover (SCO) transition over the temperature measured. Solution measurements on a series of six complexes – [Fe(salEen)2]ClO4 (1), [Fe(salEen)2]BPh4·0.5H2O (2), [Fe(5-Br-salEen)2]ClO4 (3), [Fe(5-Br-salEen)2]BPh4·DMF (4), [Fe(3,5-Br-salEen)2]ClO4·EtOH (5) and [Fe(3,5-Br-salEen)2]BPh4·DMF (6) – were performed by UV–vis and NMR spectroscopies
研究了酚盐环衍生化对在固态和溶液状态下带有N-乙基-N-(2-氨基乙基)水杨酸铝基配体的Fe(III)配合物的磁性的影响。合成了两个新的配合物[Fe(3,5-Br-salEen)2 ] ClO 4 .EtOH(5)和[Fe(3,5-Br-salEen)2 ] BPh 4 .DMF(6)。对这些配合物的SQUID磁力分析研究表明,尽管配合物5处于低旋转(LS)状态,但配合物6显示在所测温度范围内的渐进和不完全自旋交叉(SCO)跃迁。一系列六个配合物的溶液测量– [Fe(salEen)2 ] ClO 4(1),[Fe(salEen)2 ] BPh 4 ·0.5H 2 O(2), [Fe(5-Br-salEen)2 ] ClO 4(3),[Fe(5-Br-salEen)2 ] BPh 4 ·DMF(4),[Fe(3,5-Br-salEen)2 ] ClO 4 ·EtOH(5)和[Fe( 3,5-Br-salEen)2