Synthesis, Characterization, and Linkage Isomerism in Mononuclear Ruthenium Complexes Containing the New Pyrazolate-Based Ligand Hpbl
作者:Laia Francàs、Rosa M. González-Gil、Albert Poater、Xavier Fontrodona、Jordi García-Antón、Xavier Sala、Lluís Escriche、Antoni Llobet
DOI:10.1021/ic5009076
日期:2014.8.4
characterized by spectroscopic and electrochemical techniques. The Ru–aqua complex 2 undergoes N → O linkage isomerization as observed electrochemically, and the related thermodynamic and kinetic parameters are extracted from cyclic voltammetry experiments together with DIGISIM, a CV simulation package. Under basic conditions an additional isomer is observed where the pyrazolyl group in the Hpbl ligand is replaced
一种新的四齿双核配体[1,1'-(4-甲基-1 H-吡唑-3,5-二基)双(1-(吡啶-2-基)乙醇)](Hpbl),含有混合的O / N原子供体组已经合成,并通过分析和光谱技术进行了表征。含有通式[Ru II X(Hpbl)(trpy)] y +(trpy = 2,2':6',2''- terpyridine的配体的Ru–Cl和Ru–aqua配合物; X = Cl,y = 1; X = H 2 O,y = 2)已制备并通过光谱和电化学技术进行了全面表征。Ru-aqua复合物2进行电化学观察的N→O键异构化,并从循环伏安法实验和CV模拟程序包DIGISIM中提取相关的热力学和动力学参数。在碱性条件下,观察到另外的异构体,其中Hpb1配体中的吡唑基被双嘧啶基吡啶基取代。已经通过DFT计算对所有异构体进行了进一步的结构和电子表征。