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Issue 10, 2010
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Building Fe(iii)clusters with derivatised salicylaldoximes

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Abstract

The syntheses, structures and magnetic properties of nine new iron complexes containing salicylaldoxime (saoH2) or derivatised salicylaldoximes (R-saoH2), [Fe3O(OMe)(Ph-sao)2 Cl2(py)3]·2MeOH (1·2MeOH), [Fe3O(OMe)(Ph-sao)2Br2(py)3]·Et2O (2·Et2O), [Fe4(Ph-sao)4F4(py)4]·1.5MeOH (3·1.5MeOH), [Fe6O2(OH)2(Et-sao)2(Et-saoH)2(O2CPh)6] (4), [HNEt3]2[Fe6O2(OH)2(Et-sao)4(O2CPh(Me)2)6]·2MeCN (5·2MeCN), [Fe6O2(O2CPh)10(3-tBut-5-NO2-sao)2(H2O)2]·2MeCN (6·2MeCN), [Fe6O2(O2CCH2Ph)10(3-tBut-sao)2(H2O)2]·5MeCN (7·5MeCN), {[Fe6Na3O(OH)4(Me-sao)6(OMe)3(H2O)3(MeOH)6]·MeOH}n (8·MeOH) and [HNEt3]2[Fe12Na4O2(OH)8(sao)12(OMe)6(MeOH)10] (9) are discussed. The predominant building block appears to be the triangular [Fe3O(R-sao)3]+ species which can self-assemble into more elaborate arrays depending on reaction conditions. An interesting observation is that the R-saoH/R-sao2 ligand system tends to adopt coordination modes similar to carboxylates. The most unusual molecule is the [Fe4F4] molecular square, 3. While Cl and Br appear to act only as terminal ligands, the F ions bridge making a telling impact on molecular structure and topology.

Graphical abstract: Building Fe(iii) clusters with derivatised salicylaldoximes

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Supplementary files

Article information


Submitted
17 Nov 2009
Accepted
06 Jan 2010
First published
03 Feb 2010

Dalton Trans., 2010,39, 2727-2734
Article type
Paper

Building Fe(III) clusters with derivatised salicylaldoximes

K. Mason, I. A. Gass, S. Parsons, A. Collins, F. J. White, A. M. Z. Slawin, E. K. Brechin and P. A. Tasker, Dalton Trans., 2010, 39, 2727
DOI: 10.1039/B924143D

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