Molecular pac-man and tacos: layered cu(ii) cages from ligands with high binding site concentrations
Abstract
© The Royal Society of Chemistry 2015. The in situ formation and subsequent Cu(ii) ligation of the polydentate pro-ligands o-[(E)-(2-hydroxy-3-methoxyphenyl)methylideneamino]benzohydroxamic acid (L1H3), o-[(E)-(2-hydroxy-3-methoxy-5-bromophenyl)methylideneamino]benzohydroxamic acid (L2H3) and o-[(E)-(2-hydroxyphenyl)methylideneamino]benzohydroxamic acid (L3H3), leads to the self-assembly of the cages [Cu(ii)10(L1)4(2-aph)2(H2O)2](ClO4)4·5MeOH (1), [Cu(ii)14(L1)8(MeOH)2.5(H2O)7.5](NO3)4·3MeOH·7H2O (2), [Cu(ii)14(L2)8(MeOH)4(H2O)6](NO3)4·6H2O (3), [Cu(ii)14(L3)8(MeOH)6(H2O)2](NO3)4·4MeOH·8H2O (4) and [Cu(ii)30O(OH)4(OMe)2(L1)16(MeOH)4(H2O)2](ClO4)4·2MeOH·30H2O (5). Each member comprises a highly unusual topology derived from off-set, stacked, near planar layers of polynuclear subunits connected through long Cu(ii)-O contacts. The exact topology observed is dependent on the specific reaction conditions and methodologies employed. Dc magnetic susceptibility studies on 1, 2, 4 and 5 reveals strong antiferromagnetic exchange between the Cu(ii) centres in all siblings. We also present the 1D coordination polymer {[Cu(ii)(L4)]·H2O}n (6) comprising the pseudo macrocyclic ligand [[2-[(E)-(2-hydroxy-3-methoxy-phenyl)methyleneamino]benzoyl]amino]ethanimidate (L4H2), which is formed upon the incorporation of an MeCN unit at the hydroxamate group of precursor ligand L1H3.Citation
McDonald, C., Williams, D. W., Comar, P., Coles, S. J., Keene, T. D., Pitak, M. B., Brechin, E. K., Jones, L. F. (2015) Molecular pac-man and tacos: layered cu(ii) cages from ligands with high binding site concentrations. Dalton Transactions 44 (29), pp. 13359-13368.Publisher
Royal Society of Chemistry (RSC)Journal
Dalton TransactionsPubMed ID
26133039Type
Journal articleLanguage
enISSN
1477-9226EISSN
1477-9234ae974a485f413a2113503eed53cd6c53
10.1039/c5dt01463h
Scopus Count
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Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by-nc/4.0/
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