reversibly at a potential of − 0.832 V (vs ferrocene/ferrocenium) consistent with other iron porphyrinates containing sulfur-based ligands. Despite this fact, chemical oxidation of (Bu4N)[Fe(SH)(TPP)] with ferrocenium tetrafluoroborate produced only [Fe(TPP)] indicating that the putative iron(III) hydrosulfide adduct, [Fe(SH)(TPP)], decomposes rapidly. Treatment of (Bu4N)[Fe(SH)(TPP)] with other biologically
的氢
硫化物离子(HS的结合和反应性- )到
铁(II)porphyrinates已经检查了几种合成内消旋-tetraphenylporphine(
TPP)的衍
生物。在所有情况下,HS -坐标添加到
铁中心在1:1的
化学计量形成常数(ķ ˚F反映
卟啉配体的电特性)。对于F 8
TPP配体(F 8
TPP = 5,10,15,20-四(2,6-二
氟苯基)
卟啉的二价阴离子),提出了一种中间体配合物作为氢
硫键桥接的二聚体(Bu 4 N) [Fe 2(μ- SH)(F 8
TPP)在形成(Bu 4 N)[Fe(SH)(F 8
TPP)]的过程中通过NMR光谱法鉴定了图2 ]。据报道,一种健壮的程序可用于合成和分离母体氢
硫化物加合物(Bu 4 N)[Fe(SH)(
TPP)],该方法已对其光谱学和
化学反应性进行了详细检查。电
化学测量表明,[Fe(SH)(
TPP)] -与其他含
硫基配位体的
卟啉铁一致,在-0.832