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Lookup NU author(s): Glenn Lamming, Dr Osama El-ZubirORCiD, Christopher McGurk, Dr Paul Waddell, Professor Mike ProbertORCiD, Professor Andrew HoultonORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
A series of new two-dimensional coordination framework materials, based on Ag(I)N bond formation, has been synthesized and structurally characterized by single crystal methods. Reactions between the poly-monodentate bridging ligand N,N'-((1r,4r)-cyclohexane-1,4-diyl)bis(1-(pyridin-3-yl)methanimine), L1, and silver salts yield compounds {[Ag(L1)(MeCN)](CF3SO3 )}(n), 1, {[Ag(L1)(PF2O2 )]center dot H2O}(n), 2, and {Ag-2(L1)(tosylate)(2)}(n), 3. The frameworks of these materials exhibit two distinct net topologies: 3(6).4(6).5(3) (1 and 2) and 4(4).6(2) (3). In all cases, L1 ligands are found to be fully saturated, in terms of metal ion binding, with both sets of pyridyl and imino N atoms involved, though in 1 and 2, crystallographically independent L1 moieties also display pyridyl-only binding. Either solvent (1) or the anion (2 and 3) acts as a terminal ligand to support interlayer interactions in the solid state. For 2 and 3 the molecular sheet orientation lies in the plane of the largest crystal face, indicating that crystal growth is preferentially driven by coordinate bond formation. Despite the relatively labile nature, typical of such Ag(I)N bonds, solvent-based exfoliation of crystals of 3 was shown to provide dispersions of large, mu m(2), flakes which readily deposit on oxide surfaces as single-molecule sheets, as revealed by atomic force microscopy.
Author(s): Lamming G, El-Zubir O, Kolokotroni J, McGurk C, Waddell PG, Probert MR, Houlton A
Publication type: Article
Publication status: Published
Journal: Inorganic Chemistry
Year: 2016
Volume: 55
Issue: 19
Pages: 9644-9652
Print publication date: 03/10/2016
Online publication date: 15/09/2016
Acceptance date: 02/04/2016
Date deposited: 07/12/2016
ISSN (print): 0020-1669
ISSN (electronic): 1520-510X
Publisher: American Chemical Society
URL: http://dx.doi.org/10.1021/acs.inorgchem.6b01365
DOI: 10.1021/acs.inorgchem.6b01365
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