Synthesis of hydrido–iridium(<scp>III</scp>) complexes from a trifluoromethanesulphonato intermediate
作者:B. Patrick Sullivan、Thomas J. Meyer
DOI:10.1039/c39840000403
日期:——
The versatile new precursor to bis-2,2′-bipyridine complexes of IrIII, cis-[IrIII(bpy)2(OSO2CF3)2][CF3SO3](bpy = 2,2′-biyridine), has been isolated and used for the preparation of the new hydrido complexes of IrIII, cis-[Ir(bpy)2(PPh3)H][PF6]2 and cis-[Ir(bpy)2H2][PF6], and for an improved, high-yield synthesis of [Ir(bpy)3][PF6]3.
Ultrafast Dynamics of the Metal-to-Ligand Charge Transfer Excited States of Ir(III) Proteo and Deutero Dihydrides
作者:Chelsea M. Taliaferro、Evgeny O. Danilov、Felix N. Castellano
DOI:10.1021/acs.jpca.8b02266
日期:2018.5.10
understanding the fundamental spectroscopy and photophysics of the MLCT excited states of Ir(III) diimine hydrides, cis-[Ir(bpy)2H2]+ (bpy = 2,2′-bipyridine) and its deuterated analogue cis-[Ir(bpy)2D2]+ were prepared and investigated. The robust nature of these molecules enabled detailed solution-based photophysical studies using ultrafast transient absorption and infraredspectroscopy, executed without the
几十年来,过渡金属氢化物一直处于利用光酸或光氢化物生成的众多光催化反应的最前沿。最重要的是M–H键本身的性质,它通常是光化学反应的主要部位,尤其是在具有金属到配体电荷转移(MLCT)激发态的Ir(III)氢化物中。作为理解Ir(III)二亚胺氢化物MLCT激发态的基本光谱学和光物理的出发点,顺式-[Ir(bpy)2 H 2 ] +(bpy = 2,2'-联吡啶)及其氘代类似物顺式-[Ir(bpy)2 D 2 ] +准备和调查。这些分子的强大特性使他们能够使用超快速瞬态吸收和红外光谱进行详细的基于溶液的光物理研究,而无需产生永久的光产物。这两个分子的静态傅立叶变换红外光谱和拉曼光谱(λex = 785 nm)显示出微弱但可测量的Ir–H和Ir–D拉伸振动分别集中在2120和1510 cm –1处。短命(τ= 25皮秒)观察两者MLCT激发态顺式-物[Ir(联吡啶)2 ħ 2 ] +及顺式-物[Ir(联吡啶)2