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Synthesis and Characterization of Cationic Platinum(II) Complexes with Two Chelating Ligands
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-01-30 , DOI: 10.1002/ejic.201901221
Ondřej Bárta 1 , Piermaria Pinter 2 , Ivana Císařová 1 , Thomas Strassner 2 , Petr Štěpnička 1
Affiliation  

A series of cationic Pt(II) complexes with chelating bis‐carbene and P,P‐ or P,S‐ligands, viz. [(C^C)Pt(X^Y)][BF4]2 (2a–e), where C^C = methylenebis(3‐methyl‐1H‐imidazol‐1‐yl‐2‐ylidene, and X^Y = Ph2PCH2CH2PPh2 (dppe) (a), Ph2P(CH2)3PPh2 (dppp) (b), 1,2‐(Ph2P)2C6H4 (dppbz) (c), [Fe(η5‐C5H4PPh2)2] (dppf) (d), and Ph2PCH2CH2SPh (e), were synthesized and structurally characterized by NMR and MS spectroscopy and by single‐crystal X‐ray diffraction analysis. Furthermore, photophysical measurements showed that these compounds were non‐emissive at room temperature. However, when cooled to 77 K, compounds 2a, 2b and 2c showed weak luminescence in the near UV region with emission maxima in the 380–395 nm range.

中文翻译:

具有两种螯合配体的阳离子铂(II)配合物的合成与表征

一系列具有螯合双卡宾和P,P-或P,S-配体的阳离子Pt(II)配合物,即。[(C ^ C)Pt(X ^ Y)] [BF 4 ] 22a–e),其中C ^ C =亚甲基双(3-甲基-1 H-咪唑-1-基-2-亚基,X ^ Y = Ph 2 PCH 2 CH 2 PPh 2(dppe)(a),Ph 2 P(CH 23 PPh 2(dppp)(b),1,2-(Ph 2 P)2 C 6 H 4( dppbz)(Ç),的[Fe(η 5 -C 5 H ^ 4 PPH 22 ](DPPF)(d),且Ph 2 PCH 2 CH 2 SPh上(ë),合成,并通过NMR进行结构表征和MS光谱和单晶体X射线衍射分析。此外,光物理测量表明这些化合物在室温下不发光。然而,当冷却至77 K时,化合物2a2b2c在近UV区显示弱发光,最大发射在380-395 nm范围内。
更新日期:2020-01-31
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