Platinum(II) complexes with spatially encumbered chelates; syntheses, structure and photophysics

被引：17

作者：

Hsieh, Hsi-Ying ^{[1
]}

Lin, Chen-Huey ^{[2
]}

Tu, Guan-Min ^{[2
]}

Chi, Yun ^{[2
]}

Lee, Gene-Hsiang ^{[3
]}

机构：

[1] Chung Hwa Coll Med Technol, Dept Food Nutr, Tainan 717, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan

[3] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

来源：

INORGANICA CHIMICA ACTA | 2009年 / 362卷 / 13期

关键词：

Platinum(II) complexes; Triazolate; Bond strain; Photophysics; X-ray crystal structures; LIGHT-EMITTING-DIODES; CENTER-DOT-PT; HIGHLY EFFICIENT; LUMINESCENCE PROPERTIES; CRYSTAL-STRUCTURES; ELECTROPHOSPHORESCENT DEVICES; SPECTROSCOPIC PROPERTIES; PHOSPHORESCENT MATERIALS; IRIDIUM(III) COMPLEXES; OLED APPLICATIONS;

D O I：

10.1016/j.ica.2009.06.041

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of the spatially congested 5-(6-methylpyridin-2-yl)-3-trifluoromethyl-1,2,4-triazole (fmptzH) chelate with K2PtCl4 in basic media gave a pale-yellow complex [Pt(fmptz)(2)] (1), for which the single crystal X-ray diffraction study showed a highly distorted square-planar coordination geometry with one N-Pt-N vector significantly deviated from linearity. This complex undergoes slow equilibration in refluxing THF to afford a dinuclear complex [Pt(fmptz)(mu-fmptz)](2) (2), showing reversible transformation of one fmptz chelate to the distinctive bridging mode. Synthesis of the less spatially congested, heteroleptic complexes [Pt(fppz)(fmptz)] (3) and [Pt(iqbpz)(fmptz)] (4) were successfully achieved by combination of [Pt(fppzH)Cl-2] and [Pt(iqbpzH)Cl-2] with one equiv. of fmptzH ligand under similar condition, fppzH = 5-(2-pyridyl)-3-trifluoromethyl-pyrazole and iqbpzH = 5-(1-isoquinolyl)-3-tert-butyl-pyrazole. Only the derivative 4 was found to be weakly emissive in both fluid and solid states at room temperature. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：4734 / 4739

页数：6

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