Solvent-triggered single-crystal-to-single-crystal transformation from a monomeric to polymeric copper(II) complex based on an aza macrocyclic ligand

Jong Won Shin, Ah Rim Jeong, Younghak Kim, Dae Woong Kim, Sang Geul Lee, Hyosun Lee, Dohyun Moon

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Reversible solvent-triggered single-crystal-to-single-crystal (SCSC) transformations are observed between two copper(II) azamacrocyclic complexes: [Cu(C16H38N6)(H2O)2](C12H6O4) (1) and [Cu(C16H38N6)(C12H6O4)] (2). Complex (1) was prepared via self-assembly of a copper(II) azamacrocyclic complex containing butyl pendant groups, [Cu(C16H38N6)(ClO4)2], with 2,7-naphthalenedicarboxylic acid. When monomeric compound (1) was immersed in CH3OH, coordination polymer (2) was obtained, indicating a solvent-triggered SCSC transformation. Furthermore, when (2) was immersed in water, an reverse SCSC transformation from (2) to (1) occurred. Complex (1) presents a 3D supramolecular structure formed via intermolecular hydrogen-bonding interactions, whereas complex (2) features a 1D zigzag coordination polymer. The reversible SCSC transformation of (1) and (2) was characterized using single-crystal X-ray diffraction and in situ powder X-ray diffraction techniques. Despite its poor porosity, complex (2) displayed interesting CO2 adsorption behaviour under CO2 gas.

Original languageEnglish
Pages (from-to)225-232
Number of pages8
JournalActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials
Volume76
DOIs
StatePublished - 1 Apr 2020

Keywords

  • 1D zigzag coordination polymer
  • 2,7-naphthalenedicarboxylic acid
  • copper(II) azamacrocyclic complex
  • crystal structure
  • gas sorption
  • intermolecular interaction
  • Single-crystal-to-single-crystal (SCSC) transformation
  • solvent-triggered
  • supramolecular structure

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