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Anion···? interactions and metastability: structural transformations in a silver-pyrazine network

Gee, William James, Robertson, Karen, Skelton, Jonathan (2017) Anion···? interactions and metastability: structural transformations in a silver-pyrazine network. European Journal of Inorganic Chemistry, 2017 (19). pp. 2628-2638. ISSN 1434-1948. E-ISSN 1099-0682. (doi:10.1002/ejic.201700505)

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http://dx.doi.org/10.1002/ejic.201700505

Abstract

Structural evidence of anion···? interactions influencing single-crystal-to-single-crystal (SCSC) transformations is demonstrated herein with a metastable silver-pyrazine system. A cascade of SCSC transformations driven by changes to anion···? stabilisation sees two metastable species convert to a ground-state form. This constitutes one of the most dramatic chemical effects yet attributed to anion···? interactions. The metastable networks, [Ag(?-NO2)(pyz)] (1-2), are composed of dimerised (1) and delaminated (2) AgNO2/pyrazine, which convert to the ground-state [Ag(?2-NO2)(pyz)] form (3) with 3D connectivity. The metastable phases show responsiveness to solvent vapour and temperature. This work shows how anion···? interactions influence solid-state structure with support from computational modelling, and highlights how metastable materials may harness anion···? interactions to deliver large structural and property changes.

Item Type: Article
DOI/Identification number: 10.1002/ejic.201700505
Subjects: Q Science > QD Chemistry > QD156 Inorganic synthesis
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Michael Woods
Date Deposited: 16 May 2017 13:55 UTC
Last Modified: 12 Jul 2019 13:15 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61738 (The current URI for this page, for reference purposes)
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