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Crowding out: ligand modifications and their structure directing effects on brucite-like {Mx(μ3-OH)y} (M = Co(ii), Ni(ii)) core growth within polymetallic cages
Slater-Parry, ME Durrant, JP Howells, JM Pitak, MB Horton, PN Klooster, WT Coles, SJ O'Connor, HM Brechin, EK Barra, AL
Slater-Parry, ME
Durrant, JP
Howells, JM
Pitak, MB
Horton, PN
Klooster, WT
Coles, SJ
O'Connor, HM
Brechin, EK
Barra, AL
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2018-12-20
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Abstract
© The Royal Society of Chemistry. Previous employment of the ligands 2-methoxy-6-[(methylimino)methyl]phenol (L 1 H) and 2-methoxy-6-[(phenylimino)methyl]phenol (L 2 H) has resulted in the self-assembly of pseudo metallocalix[6]arene complexes of general formulae: [M 7 (μ 3 -OH) 6 (L x ) 6 ](NO 3 ) y (M = Ni(ii), x = 1, y = 2 (1) and Co(ii/iii), x = 2, y = 3 (2)). Extrapolating upon this work, we report the coordination chemistry of ligands 2-methoxy-6-{[(2-methoxyphenyl)imino]methyl}phenol (L 3 H), 2-[(benzylimino)methyl]-6-methoxyphenol (L 4 H), 2-[(benzylamino)methyl]-6-methoxyphenol (L 5 H) and 2-[(benzylamino)methyl]-4-bromo-6-methoxyphenol (L 6 H), whose structures are modifications of ligands L 1-2 H. These ligands are employed in the synthesis and characterisation of the dimetallic complex [Ni(ii) 2 (L 3 ) 3 (H 2 O)](NO 3 )·2H 2 O·3MeOH (3); the monometallic complexes [Ni(ii)(L 4 ) 2 ] (4) and [Co(iii)(L 4 ) 3 ]·H 2 O·MeOH (5a); and the tetranuclear pseudo metallocalix[4]arene complexes: [(NO 3 )⊂Co(ii) 4 (μ 3 -OH) 2 (L 5 ) 4 (H 2 O) 2 ](NO 3 )·H 2 O (6), [(NO 3 )⊂Ni(ii) 4 (μ 3 -OH) 2 (L 5 ) 4 (H 2 O) 2 ](NO 3 )·H 2 O (7) and [Ni(ii) 4 (μ 3 -OH) 2 (L 6 ) 4 (NO 3 ) 2 ]·MeCN (8). The tetrametallic 'butterfly' core topologies in 6-8 are discussed with respect to their structural and topological relationship with their heptanuclear [M 7 ] (M = Co(ii), Ni(ii)) pseudo metallocalix[6]arene ancestors (1 and 2).
Citation
Slater-Parry, M. E., Durrant, J. P., Howells, J. M., Pitak, M. B., Horton, P. N., Klooster, W. T., Coles, S. J., O'Connor, H. M., Brechin, E. K., Barra, A-L & Jones, L. F. (2019) Crowding out: ligand modifications and their structure directing effects on brucite-like {M-x((3)-OH)(y)} (M = Co(ii), Ni(ii)) core growth within polymetallic cages, Dalton Transactions, 48(4), pp. 1477-1488. https://doi.org/10.1039/C8DT04229B
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PubMed ID
30632582
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Journal article
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en
Description
This is an accepted manuscript of an article published by Royal Society of Chemistry in Dalton Transactions on 20/12/2018, available online: https://doi.org/10.1039/C8DT04229B
The accepted version of the publication may differ from the final published version.
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ISSN
1477-9226
EISSN
1477-9234