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Issue 12, 2016
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Supramolecular aggregation of Ni(salen) with (C6F5)2Hg and [o-C6F4Hg]3

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Abstract

As part of our ongoing interest in the supramolecular chemistry of fluorinated organomercurials, we have investigated the interaction of bis(pentafluorophenyl)mercury ((C6F5)2Hg), and trimeric (perfluoro-o-phenylene)mercury ([o-C6F4Hg]3), with nickel(II) N,N′-bis(salicylidene)ethylenediamine) (Ni(salen)). While solution studies monitored by UV-VIS spectroscopy suggest that Ni(salen) interacts with the trinuclear mercury complex in solution, the 1 : 1 adduct (Ni(salen)-(C6F5)2Hg) and the 1 : 1 adducts Ni(salen)-[o-C6F4Hg]3 and [Ni(salen)-[o-C6F4Hg]3-THF-H2O] can be obtained by slow evaporation of solutions containing the two building blocks. While arene–fluoroarene and hydrogen bonding interactions, as well as interactions between mercury and the salen ligand are the predominant forces responsible for the formation of these adducts, Ni(salen)-[o-C6F4Hg]3 and [Ni(salen)-[o-C6F4Hg]3-THF-H2O] also display short Ni–Hg separations consistent with the presence of metallophilic interactions. Quantum theory of atoms in molecules (QTAIM) analyses of the Ni–Hg interactions in these adducts finds that these interactions are dominated by electrostatic and dispersion forces, despite featuring non-negligible covalent contributions.

Graphical abstract: Supramolecular aggregation of Ni(salen) with (C6F5)2Hg and [o-C6F4Hg]3

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Publication details

The article was received on 19 May 2015, accepted on 03 Feb 2016 and first published on 04 Feb 2016


Article type: Paper
DOI: 10.1039/C5DT01887K
Dalton Trans., 2016,45, 5045-5051

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    Supramolecular aggregation of Ni(salen) with (C6F5)2Hg and [o-C6F4Hg]3

    M. Tsunoda, M. Fleischmann, J. S. Jones, N. Bhuvanesh, M. Scheer and F. P. Gabbaï, Dalton Trans., 2016, 45, 5045
    DOI: 10.1039/C5DT01887K

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