Blue-Emitting Platinum(II) Complexes Bearing both Pyridylpyrazolate Chelate and Bridging Pyrazolate Ligands: Synthesis, Structures, and Photophysical Properties
作者:Sheng-Yuan Chang、Jing-Lin Chen、Yun Chi、Yi-Ming Cheng、Gene-Hsiang Lee、Chang-Ming Jiang、Pi-Tai Chou
DOI:10.1021/ic701586c
日期:2007.12.1
A new Pt(II) dichloride complex [Pt(fppzH)Cl2] (1), in which fppzH = 3-(trifluoromethyl)-5-(2-pyridyl)pyrazole, was prepared by the treatment of a pyridylpyrazole chelate fppzH with K2PtCl4 in aqueous HCl solution. Complex 1 could further react with its parent pyrazole (pzH), 3,5-dimethylpyrazole (dmpzH), or 3,5-di-tert-butylpyrazole (dbpzH) to afford the monometallic [Pt(fppz)(pzH)Cl] (2), [Pt(fppz)(dmpzH)Cl]
通过用K2PtCl4处理吡啶基吡唑螯合物fppzH,制备了新的二氯化Pt(II)二氯化物络合物[Pt(fppzH)Cl2](1),其中fppzH = 3-(三氟甲基)-5-(2-吡啶基)吡唑在HCl水溶液中。配合物1可以与其母体吡唑(pzH),3,5-二甲基吡唑(dmpzH)或3,5-二叔丁基吡唑(dbpzH)进一步反应,得到单金属[Pt(fppz)(pzH)Cl]( 2),[Pt(fppz)(dmpzH)Cl](3),[Pt(fppz)(dmpzH)2] Cl(4)或两个具有结构式[Pt(fppz)(dbpzH)Cl]的结构异构体(5a ,b)。对2、4和5a,b的单晶X射线衍射研究显示出方形平面Pt(II)构架,其中2中的fppz和pzH配体之间发生了牢固的配体氢键。该配体H键被取代通过在4中的双NH ... Cl相互作用以及分子间NH ... O(与THF溶剂化物)和NH ... 5