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Issue 18, 2012
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Investigating the solid state hosting abilities of homo- and hetero-valent [Co7] metallocalix[6]arenes

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Abstract

A family of homo-valent [Co(II)7(OH)6(L1)6](NO3)2 (1), [(MeOH)2⊂Co(II)7(OH)6(L1)6](NO3)2 (2) (where L1H = 2-iminomethyl-6-methoxyphenol) and hetero-valent [(NO3)2⊂Co(III)Co(II)6(OH)6(L2)6](NO3)·3MeCN (4) (where L2H = 2-iminophenyl-6-methoxyphenol) complexes possess metallic skeletons describing planar hexagonal discs. Their organic exteriors form double-bowl shaped topologies, and coupled with their 3-D connectivity, this results in the formation of molecular cavities in the solid state. These confined spaces are shown to behave as host units in the solid state for guests including solvent molecules and charge balancing counter anions. Magnetic susceptibility measurements on 2 and 4 reveal weak ferro- and ferrimagnetism, respectively. The utilisation of other Co(II) salt precursors gives rise to entirely different species including the mononuclear and trinuclear complexes [Co(II)(L2)2] (5) and [Co(III)2Na(I)1(L3)6](BF4) (6) (where L3H = 2-iminomethyl-4-bromo-6-methoxyphenol).

Graphical abstract: Investigating the solid state hosting abilities of homo- and hetero-valent [Co7] metallocalix[6]arenes

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Publication details

The article was received on 21 Nov 2011, accepted on 14 Feb 2012 and first published on 14 Mar 2012


Article type: Paper
DOI: 10.1039/C2DT12229D
Citation: Dalton Trans., 2012,41, 5610-5616
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    Investigating the solid state hosting abilities of homo- and hetero-valent [Co7] metallocalix[6]arenes

    S. T. Meally, C. McDonald, P. Kealy, S. M. Taylor, E. K. Brechin and L. F. Jones, Dalton Trans., 2012, 41, 5610
    DOI: 10.1039/C2DT12229D

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