Iron(II) Complexes with Amide-Containing Macrocycles as Non-Heme Porphyrin Analogues
作者:Ivan V. Korendovych、Olga P. Kryatova、William M. Reiff、Elena V. Rybak-Akimova
DOI:10.1021/ic0701209
日期:2007.5.1
same conditions. The reaction is first-order in both iron(II) complex and dioxygen, and no intermediate is spectroscopically observed. Similar behavior was observed for the monodeprotonated complex Fe(HpydioneN5)(Cl). The presence of an accessible proton either from the solvent (reactions in methanol) or from the complex itself (in Fe(HpydioneN5)(Cl)) proves sufficient to alter the oxygenation pathway
大环十五碳烯配体3,6,9,12,18-五氮杂双环[12.3.1] octadeca-1(18),14,16-三烯-2,13-二酮(H2pydioneN5)和16-氯的铁(II)配合物合成并充分表征了-3,6,9,12,18-五氮杂双环[12.3.1] octadeca-1(18),14,16-三烯-2,13-二烯(H2pyCldioneN5)。均分离了具有一个或两个H2pydione的去质子化酰胺基的配合物。在前一种情况下,金属离子具有扭曲的八面体配位球;在后一种情况下,复合体采用五边形-双锥体的几何形状。NMR实验表明,配体的质子化状态保留在二甲基亚砜(DMSO)溶液中。即使在低温下,配合物也保持高自旋状态。铁(II)配合物氧合的详细动力学研究表明,配合物的去质子化状态对与双氧的反应性具有深远的影响。铁(II)的双质子化复合物Fe(pydioneN5)在质子惰性溶剂中的氧化过程类似于铁