Heteropolynuclear Complexes of 3,5-Dimethylpyrazolate [Pt2M4(Me2pz)8] (M = Ag, Cu). Highly Luminescent Character of the Triplet Excited State Based on Mixed

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• 作者：Keisuke Umakoshi ; Takashi Kojima ; Keizo Saito ; Seiji Akatsu ; Masayoshi Onishi ; Shoji Ishizaka ; Noboru Kitamura ; Yoshihide Nakao ; Shigeyoshi Sakaki ; Yoshiki Ozawa
• 刊名：Inorganic Chemistry
• 出版年：2008
• 出版时间：June 16, 2008
• 年：2008
• 卷：47
• 期：12
• 页码：5033 - 5035
• 全文大小：1027K
• 年卷期：v.47,no.12(June 16, 2008)
• ISSN：1520-510X

文摘

The platinum dimer and heteropolynuclear platinum complexes of 3,5-dimethylpyrazolate, [Pt₂M₄(μ-Me₂pz)₈] [M = H (1), Ag (2), Cu (3)], were synthesized and structurally characterized. They exhibit yellow, sky-blue, and orange luminescence, respectively, in the solid state. The absorption bands of 2 and 3 are mainly assigned to the combination of the metal–metal-to-ligand charge-transfer and [Pt₂ → Pt₂M₄] transitions by the time-dependent density functional theory (DFT) method. DFT calculations also indicate that the emissive states of 2 and 3 are ³[Pt₂ → Pt₂Ag₄] and ³[Cu(d) → Pt₂Cu₄], respectively.