Structure and magnetism of heptanuclear complex constructed by the encapsulation of octacyanotungstate(IV) with copper(II) cations of tripodal ligands

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• 作者：Fan Yu ; Bao Li
• 关键词：Heptanuclear compound ; Cyanide ; Ferromagnetic interaction ; Octacyanotungstate
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 出版时间：August, 2012
• 年：2012
• 卷：22
• 期：Complete
• 页码：37-39
• 全文大小：338 K

文摘

A new heptanuclear compound [{Cu(TPA)CN}₆W(CN)₂][ClO₄]₈¡¤14H₂O (1) (TPA = tris(2-pyridylmethyl)amine) was synthesized by the reaction of [Cu(TPA)]^2 + unit and K₄W(CN)₈. The cyanometalate core is encapsulated by mononuclear copper moieties via cyano bridges. 1 crystallizes in monoclinic space group P2₁/c with a = 22.01(2) ?, b = 26.87(3) ?, c = 31.64(2) ?, ¦Â = 128.87(2)¡ã, and Z = 4. Variable temperature magnetic measurements have demonstrated that very weak ferromagnetic interaction between the nearest paramagnetic Cu^II centers is exhibited. Thus weak ferromagnetic coupling might be transferred by NCWCN bridging units.