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A New Family of 3 d –4 f Bis‐Calix[4]arene‐Supported Clusters

Journal Article · · Chemistry - A European Journal
 [1];  [1];  [2];  [3];  [3];  [2];  [1]
  1. Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
  2. EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
  3. 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 Journal Issue: 56 Vol. 23; ISSN 0947-6539
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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