A Soluble Equivalent of the Supramolecular, Quasi-One-Dimensional, Semiconducting Magnus' Green Salt

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• 作者：Margherita Fontana ; Henry Chanzy ; Walter R. Caseri ; Paul Smith ; Albertus P. H. J. Schenning ; E. W. Meijer ; and Franziska Grö ; hn
• 刊名：Chemistry of Materials
• 出版年：2002
• 出版时间：April 2002
• 年：2002
• 卷：14
• 期：4
• 页码：1730 - 1735
• 全文大小：333K
• 年卷期：v.14,no.4(April 2002)
• ISSN：1520-5002

文摘

A soluble supramolecular, quasi-one-dimensional semiconducting complex comprisingalternately stacked [Pt(NH₂dmoc)₄]²⁺ and [PtCl₄]^2- units, where dmoc denotes (S)-3,7-dimethyloctyl, has been synthesized and characterized with various methods. In contrast toearlier enunciated expectations and unlike nearly all other known derivatives, [Pt(NH₂dmoc)₄][PtCl₄] showed the color of Magnus' green salt, [Pt(NH₃)₄][PtCl₄], which is characteristic for linearly arranged platinum atoms with considerable Pt-Pt interactions. The Pt-Pt distance in [Pt(NH₂dmoc)₄][PtCl₄] was established to be 3.1 Å from powder X-ray andelectron diffraction patterns. Similar to Magnus' green salt, [Pt(NH₂dmoc)₄][PtCl₄] was foundto be a semiconductor with a thermal activation energy of 0.24 eV and an electricalconductivity of 1.6 × 10^-7 S/cm at room temperature. Although Magnus' green salt virtuallyis intractable, [Pt(NH₂dmoc)₄][PtCl₄] was soluble in common organic solvents. Remarkably,strong evidence indicated that self-assembled platinum chain structures were present alsoin solution. Hence, [Pt(NH₂dmoc)₄][PtCl₄] may indeed be regarded as a processible form ofMagnus' green salt.