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Coordination polymers utilizing N-oxide functionalised host ligands

Henkelis, James J., Barnett, Sarah A., Harding, Lindsay P. and Hardie, Michaele J. (2012) Coordination polymers utilizing N-oxide functionalised host ligands. Inorganic Chemistry, 51 (20). pp. 10657-10674. ISSN 0020-1669

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    Abstract

    Pyridyl functionalized host molecules are oxidized to their N-oxide analogues and form a series of coordination polymers and discrete complexes with transition metal cations. Complex {[Ag3(NMP)6(L1)2]·3(ClO4)}∞ where L1 = tris(isonicotinoyl-N-oxide)cyclotriguaiacylene, NMP = N-methylpyrrolidone, is a three-dimensional (3-D) 3,6-connected coordination polymer of pyrite-like (pyr) topology and features ligand unsupported argentophilic interactions, while two-dimensional (2-D) 3,6-connected coordination polymers with the rarely reported kagome dual (kgd) topology are found for [M(L1)2]2+ where M = Zn, Cd, Cu. Ligand L2 = tris(nicotinoyl-N-oxide)cyclotriguaiacylene forms a 2-D coordination polymer with 44 (sql) grid topology in complexes {[M(L2)2(DMF)2]·2ClO4·8(DMF)}∞ M = Cd or Cu, DMF = N,N′-dimethylformamide, and a double-linked chain structure in {[Co(L2)2(DMF)2]·2NO3·4(DMF)·H2O}∞, and both types of structure feature hand-shake self-inclusion motifs either within or between the polymers. 2-D coordination networks with 63 (hcb) topologies are found in complexes {[M(L3)(NO3)2]·2(DMF)}∞ (M = Cd, Zn) and {[Cu5(L3)2Cl10(NMP)4]}∞ where L3 = tris(2-pyridylmethyl)cyclotriguaiacylene, while [Ag2(L3)2(NMP)4]·2(BF4)·2(NMP) has a discrete dimeric structure which again shows hand-shake host–guest interactions supported by π–π stacking.

    Item Type: Article
    Additional Information: Reprinted with permission from Inorg. Chem., Article ASAP DOI: 10.1021/ic300940k Publication Date (Web): September 27, 2012 Copyright © 2012 American Chemical Society
    Subjects: Q Science > QD Chemistry
    Schools: School of Applied Sciences
    Related URLs:
    Depositing User: Lindsay Harding
    Date Deposited: 09 Oct 2012 15:38
    Last Modified: 14 Feb 2013 09:50
    URI: http://eprints.hud.ac.uk/id/eprint/15208

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