Anion···π Interactions and Metastability

Structural Transformations in a Silver–Pyrazine Network

William J. Gee, Karen Robertson, Jonathan M. Skelton

Research output: Contribution to journalArticle

2 Citations (Scopus)
57 Downloads (Pure)

Abstract

Structural evidence of anion···π 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···π stabilisation sees two metastable species convert to a ground-state form. This constitutes one of the most dramatic chemical effects yet attributed to anion···π interactions. Metastable networks [Ag(µ-NO2)(pyz)] (1, 2) are composed of dimerised (1) and delaminated (2) AgNO2/pyrazine, which convert to the ground-state [Ag(κ2-NO2)(pyz)] form 3 with 3D connectivity. The metastable phases show responsiveness to solvent vapour and temperature. This work shows how anion···π interactions influence solid-state structure with support from computational modelling and highlights how metastable materials may harness anion···π interactions to deliver large structural and property changes.

Original languageEnglish
Pages (from-to)2628-2636
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Volume2017
Issue number19
DOIs
Publication statusPublished - 18 May 2017

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Pyrazines
Silver
Anions
Single crystals
Ground state
Metastable phases
Stabilization
Vapors

Keywords

  • Anion···π interactions
  • Coordination polymers
  • Density functional calculations
  • Metastable compounds
  • Silver
  • Single-crystal-to-single-crystal transformations

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Anion···π Interactions and Metastability : Structural Transformations in a Silver–Pyrazine Network. / Gee, William J.; Robertson, Karen; Skelton, Jonathan M.

In: European Journal of Inorganic Chemistry, Vol. 2017, No. 19, 18.05.2017, p. 2628-2636.

Research output: Contribution to journalArticle

Gee, William J. ; Robertson, Karen ; Skelton, Jonathan M. / Anion···π Interactions and Metastability : Structural Transformations in a Silver–Pyrazine Network. In: European Journal of Inorganic Chemistry. 2017 ; Vol. 2017, No. 19. pp. 2628-2636.
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