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Inorg Chem. 2011 Sep 5;50(17):7934-6. doi: 10.1021/ic201064d. Epub 2011 Aug 1.

Shape-persistent octanuclear zinc salen clusters: synthesis, characterization, and catalysis.

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1
Institute of Chemical Research of Catalonia (ICIQ), Avenida Països Catalans 16, 43007 Tarragona, Spain.

Abstract

We describe a selective and template-controlled synthesis of a series of Zn(8) metal complexes based on a bis-nucleating salen ligand scaffold. Our results, a combination of X-ray analysis and solution studies, show that discrete, shape-persistent metal clusters can be prepared in high yield. Their activity in organic carbonate catalysis is a function of the metal-connecting fragment present in the exterior of the cluster complex. The high stability of the clusters has been confirmed by (1)H, (13)C (DEPTQ) and DOSY NMR, gel permeation chromatography, high-performance liquid chromatography, and mass spectrometry.

PMID:
21806005
DOI:
10.1021/ic201064d

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