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Issue 29, 2012

Linking [MIII3] triangles with “double-headed” phenolic oximes

Author affiliations

Abstract

Strapping two salicylaldoxime units together with aliphatic α,Ω-aminomethyl links in the 3-position gives ligands which allow the assembly of the polynuclear complexes [Fe7O2(OH)6(H2L1)3(py)6](BF4)5·6H2O·14MeOH (1·6H2O·14MeOH), [Fe6O(OH)7(H2L2)3](BF4)3·4H2O·9MeOH (2·4H2O·9MeOH) and [Mn6O2(OH)2(H2L1)3(py)4(MeCN)2](BF4)5(NO3)·3MeCN·H2O·5py (3·3MeCN·H2O·5py). In each case the metallic skeleton of the cluster is based on a trigonal prism in which two [MIII3O] triangles are tethered together via three helically twisted double-headed oximes. The latter are present as H2L2− in which the oximic and phenolic O-atoms are deprotonated and the amino N-atoms protonated, with the oxime moieties bridging across the edges of the metal triangles. Both the identity of the metal ion and the length of the straps connecting the salicylaldoxime units have a major impact on the nuclearity and topology of the resultant cluster, with, perhaps counter-intuitively, the longer straps producing the “smallest” molecules.

Graphical abstract: Linking [MIII3] triangles with “double-headed” phenolic oximes

Supplementary files

Article information


Submitted
25 Jan 2012
Accepted
19 Mar 2012
First published
19 Mar 2012

Dalton Trans., 2012,41, 8777-8785
Article type
Paper

Linking [MIII3] triangles with “double-headed” phenolic oximes

K. Mason, J. Chang, A. Prescimone, E. Garlatti, S. Carretta, P. A. Tasker and E. K. Brechin, Dalton Trans., 2012, 41, 8777 DOI: 10.1039/C2DT30189J

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