Kinetics and Mechanism of Water Substitution at Half-Sandwich Iridium(III) Aqua Cations Cp*Ir(A−B)(H2O)2+/+ in Aqueous Solution (Cp* = η5-Pentamethylcyclopentadienyl Anion; A−B = Bidentate N,N or N,O Ligand)
作者:Tilo Poth、Helmut Paulus、Horst Elias、Carlos Dücker-Benfer、Rudi van Eldik
DOI:10.1002/1099-0682(200105)2001:5<1361::aid-ejic1361>3.0.co;2-m
日期:2001.5
The perchlorate complexes of a series of half-sandwich monoaqua cations Cp*Ir(A−B)(H2O)2+/+ with A−B = prol (D/L-proline anion), picac (picolinic acid anion), R,R-dach [(−)-(1R,2R)-1,2-diaminocyclohexane], R,R-dpen [(+)-(1R,2R)-1,2-diphenylethylenediamine], phen (o-phenanthroline), and bpy (2,2′-bipyridine) (Cp* = η5-pentamethylcyclopentadienyl anion) have been prepared and characterized. An X-ray
一系列半夹心单水阳离子 Cp*Ir(A-B)(H2O)2+/+ 与 A-B = prol(D/L-脯氨酸阴离子)、picac(吡啶甲酸阴离子)、R 的高氯酸盐复合物,R-dach [(-)-(1R,2R)-1,2-二氨基环己烷], R,R-dpen [(+)-(1R,2R)-1,2-二苯基乙二胺], phen (o-邻菲咯啉) 和 bpy (2,2'-联吡啶) (Cp* = η5-五甲基环戊二烯基阴离子) 已被制备和表征。Cp*Ir(R,R-dach)(H2O)(ClO4)2·H2O 的 X 射线结构分析表明,阳离子 Cp*Ir(R,R-dach)(H2O)2+ 具有扭曲的伪-八面体配位几何。在 A-B = prol 的情况下,从水中结晶形成三核复合物 [Cp*Ir(D-prol)]3(ClO4)3,其也已通过 X 射线结构分析表征。实验数据表明,在水溶液中,三核脯氨酸复合物解离形成阳离子