Aromatic C–H Activation in the Triplet Excited State of Cyclometalated Platinum(II) Complexes Using Visible Light
作者:Fabio Juliá、Pablo González-Herrero
DOI:10.1021/jacs.5b13311
日期:2016.4.27
group by monocyclometalated Pt(II) complexes is reported. Precursors of the type [PtMe(C^N)(N^CH)], where N^CH is 2-phenylpyridine (ppyH) or related compunds with diverse electronic properties and C^N is the corresponding cyclometalated ligand, afford homoleptic cis-[Pt(C^N)2] complexes upon irradiation with blue LEDs at room temperature with evolution of methane. Heteroleptic derivatives cis-[Pt(ppy)(C'^N')]
报道了通过单环金属化 Pt(II) 配合物对含有 N 供体杂芳族部分作为导向基团的芳烃底物进行可见光驱动的环金属化。[PtMe(C^N)(N^CH)] 类型的前体,其中 N^CH 是 2-苯基吡啶 (ppyH) 或具有不同电子特性的相关化合物,C^N 是相应的环金属化配体,提供均配顺式[Pt(C^N)2] 在室温下用蓝色 LED 照射时形成复合物,并释放出甲烷。杂配衍生物顺式-[Pt(ppy)(C'^N')]类似地从[PtMe(ppy)(N'^C'H)]获得,其中N'^C'H代表一组扩展的杂芳族化合物. 实验和计算研究证明了前所未有的 CH 氧化加成,
Dark-Field Oxidative Addition-Based Chemosensing: New Bis-cyclometalated Pt(II) Complexes and Phosphorescent Detection of Cyanogen Halides
作者:Samuel W. Thomas、Koushik Venkatesan、Peter Müller、Timothy M. Swager
DOI:10.1021/ja065645z
日期:2006.12.1
halides) by either thermal or photochemical activation. We have applied this general reaction scheme to the development of a phosphorescence-based sensing system for cyanogen halides. To carry out structure-property relationship studies, a series of previously unreported Pt(II) complexes was prepared. Most of the complexes (excluding those that incorporated substituents on the ligands that forced steric