Dinuclear Platinum(II) Terpyridyl Complexes with a para-Diselenobenzoquinone Organometallic Linker: Synthesis, Structures, and Room-Temperature Phosphorescence

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• 作者：Jamal Moussa ; Keith Man-Chung Wong ; Xavier F. Le Goff ; Marie Noelle Rager ; Carmen Ka-Man Chan ; Vivian Wing-Wah Yam ; Hani Amouri
• 刊名：Organometallics
• 出版年：2013
• 出版时间：September 9, 2013
• 年：2013
• 卷：32
• 期：17
• 页码：4985-4992
• 全文大小：357K
• 年卷期：v.32,no.17(September 9, 2013)
• ISSN：1520-6041

文摘

We report the synthesis of a unique class of luminescent heterotrinuclear complexes of the general formulas [Pt(terpy){Cp*Ir-p-(畏⁴-C₆H₄Se₂)}Pt(terpy)][X]₄ (X = OTf, 3a; PF₆, 3b; BF₄, 3c; ClO₄, 3d; BPh₄, 3e). In these coordination assemblies two Pt(terpy) moieties are held by a stable 畏⁴-diseleno-p-benzoquinone complex [Cp*Ir-p-(畏⁴-C₆H₄Se₂)]. The molecular structures of solvates of 3a and 3b were ascertained by single-crystal X-ray diffraction study and confirmed the formation of the target molecules. The solid-state packing of two of these complexes confirms the presence of 蟺鈥撓€ and Pt路路路Pt interactions among individual units providing a 1D supramolecular chain for 3a, while a dimer species is obtained for 3b, illustrating the effect of the counterion on directing the crystal packing of the individual molecules. All compounds show phosphorescence in the red region (685鈥?05 nm) in fluid solution and in the solid state at room temperature, unlike the analogous compound Pt(terpy){Cp*Ir-p-(畏⁴-C₆H₄S₂)}Pt(terpy)][CF₃SO₃]₄ obtained with a dithiobenzoquinone organometallic linker, which is only luminescent at low temperature.