Assembling Hierarchical Cluster Solids with Atomic Precision

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• 作者：Ari Turkiewicz ; Daniel W. Paley ; Tiglet Besara ; Giselle Elbaz ; Andrew Pinkard ; Theo Siegrist ; Xavier Roy
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：November 12, 2014
• 年：2014
• 卷：136
• 期：45
• 页码：15873-15876
• 全文大小：352K
• ISSN：1520-5126

文摘

Hierarchical solids created from the binary assembly of cobalt chalcogenide and iron oxide molecular clusters are reported. Six different molecular clusters based on the octahedral Co₆E₈ (E = Se or Te) and the expanded cubane Fe₈O₄ units are used as superatomic building blocks to construct these crystals. The formation of the solid is driven by the transfer of charge between complementary electron-donating and electron-accepting clusters in solution that crystallize as binary ionic compounds. The hierarchical structures are investigated by single-crystal X-ray diffraction, providing atomic and superatomic resolution. We report two different superstructures: a superatomic relative of the CsCl lattice type and an unusual packing arrangement based on the double-hexagonal close-packed lattice. Within these superstructures, we demonstrate various compositions and orientations of the clusters.