Bis(hydroxyamino)triazines: versatile and high-affinity tridentate hydroxylamine ligands for selective iron(<scp>iii</scp>) chelation
作者:Irina Ekeltchik、Jenny Gun、Ovadia Lev、Rimma Shelkov、Artem Melman
DOI:10.1039/b513719e
日期:——
high affinity of BHTs to iron(III). Electrochemical studies show exceptional preference of the BHT ligands to iron(III) over iron(II), this, in addition to their small size and their fast and reversible electrochemistry makes them potentially useful electrochemical redox couples for the low end of the aqueous potential window (<0.6 V, vs. NHE). The synthetic versatility of the new ligands allows easy tuning
描述了基于双(羟基氨基)-1,3,5-三嗪,BHT的新型螯合剂家族。不同的BHT配体的性质由电化学,光谱和滴定法确定,显示出高的氧化还原稳定性,可见光范围内的透明性和在5–9 pH范围内的双质子酸样行为。研究了铁(III)和铁(II)-BHT配合物,揭示了BHT对铁(III)的高亲和力。电化学研究表明BHT的配体的铁(特殊的偏好III)在铁(II),这不仅具有体积小,快速且可逆的电化学特性,还使其成为潜在的有用的电化学氧化还原电对,适用于水性电势窗口的低端(<0.6 V,vs . NHE)。新配体的合成用途广泛,可通过改变附加在BHT上的外围基团,轻松调节疏水性,氧化还原电位,并在一定程度上调节复合物的稳定性常数。