Construction of Coordination-Driven Self-Assembled [5 + 5] Pentagons Using Metal−Carbonyl Dipyridine Ligands

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• 作者：Liang Zhao ; Koushik Ghosh ; Yaorong Zheng ; Matthew M. Lyndon ; Taufika Islam Williams ; Peter J. Stang
• 刊名：Inorganic Chemistry
• 出版年：2009
• 出版时间：July 6, 2009
• 年：2009
• 卷：48
• 期：13
• 页码：5590-5592
• 全文大小：691K
• 年卷期：v.48,no.13(July 6, 2009)
• ISSN：1520-510X

文摘

The coordination-driven self-assembly of two metal−carbonyl-cluster-coordinated dipyridyl donors, (4-C₅H₄N)₂C≡CCo₂(CO)₆ (1) and (4-C₅H₄N)₂C≡CMo₂Cp₂(CO)₄ (2), with a linear diplatinum(II) acceptor ligand was investigated. The structures of the resulting self-assembled polygons were found to be controlled by the steric bulk of the metal−carbonyl cluster adduct. The use of a sterically less imposing ligand 1 resulted in a pentagon−hexagon mixture, which was characterized by electrospray ionization time-of-flight mass spectroscopy. The exclusive formation of a [5 + 5] pentagon was achieved by the self-assembly of the bulkier molybdenum donor ligand 2 with a linear organoplatinum(II) acceptor ligand. Molecular force field modeling was used to study the structural details of the pentagonal and hexagonal architectures. The first Fe₃−Co₆−Pt₆ trimetal [3 + 3] hexagon was also synthesized via the combination of 1 with a 120° ferrocenyldiplatinum(II) acceptor.