Impact of Constitutional Isomers of (BMes<sub>2</sub>)phenylpyridine on Structure, Stability, Phosphorescence, and Lewis Acidity of Mononuclear and Dinuclear Pt(II) Complexes
作者:Ying-Li Rao、Suning Wang
DOI:10.1021/ic9007069
日期:2009.8.17
The impact of two constitutional isomers, 2-(4-BMes2-Ph)-pyridine (p-B-ppy, 1) and 5-BMes2-2-ph-pyridine (p-ppy-B, 2), as N,C-chelate ligands on the structures, stabilities, electronic and photophysical properties, and Lewis acidities of Pt(II) complexes has been investigated. Six Pt(II) complexes, Pt(p-B-ppy)Ph(DMSO) (1a), Pt(p-B-ppy)Ph(py) (1b), [Pt(p-B-ppy)Ph]2(4,4′-bipy) (1c), Pt(p-ppy-B)Ph(DMSO)
两种结构异构体2-(4-BMes 2 -Ph)-吡啶(p -B-ppy,1)和5-BMes 2 -2- ph-吡啶(p -ppy-B,2)的影响研究了Pt(II)配合物的结构,稳定性,电子和光物理性质以及路易斯酸的N,C螯合物。六个Pt(II)络合物,Pt(p -B-ppy)Ph(DMSO)(1a),Pt(p -B-ppy)Ph(py)(1b),[Pt(p -B-ppy)Ph] 2(4,4'-bipy)(1c),Pt(p -ppy-B)Ph(DMSO)(2a),Pt(p -ppy-B)Ph(py)(2b)和[Pt(p -ppy-B)Ph] 2(4,4'-bipy)(2c)已合成并完全表征。通过单晶X射线衍射分析来建立1a,1c,2a和2c的结构。所有复合物均采用顺式几何构型,其中苯基配体与ppy螯合物的苯环顺式排列。就分子中两个BMes 2基团的相对取向而言,发现双核络合物2a和2c以溶液