Anionic cyclometalated Pt(ii) and Pt(iv) complexes respectively bearing one or two 1,2-benzenedithiolate ligands†,Dalton Transactions

当前位置： X-MOL 学术 › Dalton Trans. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Anionic cyclometalated Pt(ii) and Pt(iv) complexes respectively bearing one or two 1,2-benzenedithiolate ligands†
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-08-04 00:00:00 , DOI: 10.1039/c8dt02444h
Andreea Ionescu _{1,

2,

3,

4,

5} , Nicolas Godbert _{1,

2,

3,

4,

5} , Iolinda Aiello _{1,

2,

3,

4,

5} , Loredana Ricciardi _{6,

7,

8} , Massimo La Deda _{1,

2,

3,

4,

5} , Alessandra Crispini _{1,

2,

3,

4,

5} , Emilia Sicilia _{5,

8,

9,

10} , Mauro Ghedini _{1,

2,

3,

4,

5}

Affiliation

Novel anionic cyclometalated Pt(II) square-planar complexes NBu₄[(C^N)Pt^II(S^S)], containing 2-phenylpyridine H(PhPy), 2-(2,4-difluorophenyl)-pyridine H(F₂PhPy) and benzo[h]quinoline H(Bzq), respectively, as a cyclometalated ligand and the dianionic 1,2-benzenedithiolate (Thio)²⁻ fragment as an (S^S) ligand, were synthesised. By the simple addition of an equivalent of (Thio)²⁻ to the NBu₄[(C^N)Pt^II(Thio)] complexes, octahedral anionic NBu₄[(C^N)Pt^IV(Thio)₂] analogues were obtained, representing, to the best of our knowledge, the first examples of Pt(IV) anionic cyclometalated complexes. The molecular structures of the obtained complexes in the case of the NBu₄[(Bzq)Pt^II(Thio)] and the NBu₄[(Bzq)Pt^IV(Thio)₂] complexes were confirmed by single crystal X-ray diffraction analysis. Furthermore, the electrochemical and photophysical properties of the two series of Pt(II) and Pt(IV) newly synthesised complexes were studied and DFT and TD-DFT calculations were performed in order to comprehensively investigate the displayed behaviour. All Pt(II) and Pt(IV) complexes show intense luminescence in the solid state, with remarkable enhancement of the emission quantum yields, proving to be excellent examples of aggregation-induced emission systems.

中文翻译：

阴离子环金属化的Pt（ii）和Pt（iv）配合物，分别带有一个或两个1,2-苯二硫代盐配体†

新型阴离子环金属化的Pt（II）方平面络合物NBu ₄ [（C ^ N）Pt ^II（S ^ S）]，包含2-苯基吡啶H（PhPy），2-（2,4-二氟苯基）-吡啶H（分别合成了作为环金属化配体的F ₂ PhPy）和苯并[ h ]喹啉H（Bzq）和作为（S ^ S）配体的1，2-苯二硫代二磺酸盐（Thio）^2-片段。通过将等价的（Thio）^2−添加到NBu ₄ [（C ^ N）Pt ^II（Thio）]络合物中，八面体阴离子NBu ₄ [（C ^ N）Pt ^IV（Thio）₂据我们所知，获得了]类似物，代表了Pt（IV）阴离子环金属化配合物的第一个实例。通过单晶X射线衍射分析证实了在NBu ₄ [（Bzq）Pt ^II（Thio）]和NBu ₄ [（Bzq）Pt ^IV（Thio）₂ ]配合物的情况下获得的配合物的分子结构。。此外，研究了两个系列的新合成的Pt（II）和Pt（IV）配合物的电化学和光物理性质，并进行了DFT和TD-DFT计算，以全面研究所显示的行为。所有Pt（II）和Pt（IV）配合物在固态下显示出强烈的发光，并显着提高了发射量子产率，被证明是聚集诱导发射系统的极好例子。

更新日期：2018-08-04

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11