Metal–Helix Frameworks Formed by μ 3 ‐NO 3 − with Different Orientations and Connected to a Heterometallic Cu II 10 Dy III 2 Folded Cluster

Autor: Fu-Pei Liang, Hua-Hong Zou, Xiong-Feng Ma, Hai-Ling Wang, Zhong-Hong Zhu
Rok vydání: 2019
Předmět:
Zdroj: Chemistry – A European Journal. 25:10813-10817
ISSN: 1521-3765
0947-6539
DOI: 10.1002/chem.201902096
Popis: Metal nanoclusters have a certain rigidity due to their specific coordination patterns and shapes; thus, they face extreme difficulty in folding into a specific direction to form a double-helix structure and in further interconnecting to form metal-helix frameworks (MHFs). To date, no MHFs have been produced by the formation of heterometallic clusters. Selecting the appropriate "bonding molecules" to bond metal nanoclusters in a specific multiple direction is one of the most effective strategies for designing synthetic MHFs. In this study, we realized for the first time the control of different orientations of μ3 -NO3- to join heterometallic clusters (Cu10 Dy2 ) and subsequently form a left-handed double helix chain, which further joins to form MHFs. In the structure of the MHFs, four different directions of bridging μ3 -NO3- exist, three of which are involved in the linkage of the double-helix chain. Each μ3 -NO3- is connected to three adjacent Cu10 Dy2 . Herein, we extend a new method for designing synthetic double-helix structures and MHFs, thereby further laying the foundation for the development of similar DNA double-helix structures and nucleic acid secondary structures in vitro.
Databáze: OpenAIRE
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