A Structurally Perfect S = 1/2 Metal-Organic Hybrid Kagomé Antiferromagnet

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• 作者：Emily A. Nytko ; Joel S. Helton ; Peter Mü ; ller ; Daniel G. Nocera
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：March 12, 2008
• 年：2008
• 卷：130
• 期：10
• 页码：2922 - 2923
• 全文大小：89K
• 年卷期：v.130,no.10(March 12, 2008)
• ISSN：1520-5126

文摘

We report the synthesis and magnetic characterization of Cu(1,3-bdc) (1,3-bdc = 1,3-benzenedicarboxylate), a novel structurally perfect S = ¹/₂ metal-organic hybrid kagomé antiferromagnet exhibiting properties consonant with spin frustration. In the kagomé structure, each monodentate carboxylate ligand bridges two copper ions in the kagomé plane, and the three-atom bridge allows for the shortest known metal-metal distance in any metal-organic hybrid kagomé reported to date. The compound shows antiferromagnetic mean nearest-neighbor superexchange, as evidenced by s/entities/THETAV.gif">_CW = -33 K. The compound orders ferromagnetically at 2 K and has a frustration parameter, f = 16.5, indicative of a spin-frustrated compound.