A New Family of 3 d –4 f Bis‐Calix[4]arene‐Supported Clusters
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
- EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 947240 USA
Abstract Calix[4]arenes are versatile ligands that, whilst also serving other purposes, can act as platforms for the synthesis of a wide range of 3 d , 4 f , and 3 d –4 f polymetallic clusters. The empirical metal ion binding rules established for calix[4]arene are closely mirrored by bis‐calix[4]arene, a relatively new ligand in which two equivalents of the former are directly tethered at a methylene bridge position. The direct tethering within bis‐calix[4]arene gives rise to some structural features that are related to calix[4]arene coordination chemistry, but the prevailing clusters have fascinating new topologies and coordination behaviors. Here, we present the synthesis of a family of new bis‐calix[4]arene‐supported 3 d –4 f clusters, as well as their structural characterization and magnetic properties. Comparison is drawn with calix[4]arene coordination chemistry, showing logical extension of common structural fragments and cluster capping behaviors upon moving to bis‐calix[4]arene. This approach therefore holds great potential for tuning cluster formation and composition at a high level through subsequent ligand alteration.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1379992
- Journal Information:
- Chemistry - A European Journal, Journal Name: Chemistry - A European Journal Vol. 23 Journal Issue: 56; ISSN 0947-6539
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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