Host–Guest Hydrogen Bonding Varies the Charge-State Behavior of Magnetic Sponges

Jun Zhang, Wataru Kosaka, Yasutaka Kitagawa, Hitoshi Miyasaka

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The electron-donor(D) and -acceptor(A)-assembled D2A-layer framework [{Ru2(m-FPhCO2)4}2TCNQ(OMe)2]⋅nDCE (1-nDCE; m-FPhCO2=m-fluorobenzoate; TCNQ(OMe)2=2,5-dimethoxyl-7,7,8,8-tetracyanoquinodimethane; DCE=1,2-dichloroethane) undergoes drastic charge-ordered state variations via three distinct states that are a two-electron-transferred state (2e-I), a charge-disproportionated state (1.5e-I), and a one-electron-transferred state (1e-I), depending on the degree of solvation by nDCE. The pristine form 1-4DCE has a paramagnetic 2e-I state, which eventually produces the solvent-free form 1 in 1.5e-I via an intermediate state 1-nDCE (n≤1) in 1e-I. Resolvation of 1 stabilizes 1-DCE, allowing it to switch between 1.5e-I and 1e-I, and to become ferrimagnetic with a Tc of 30 K (1.5e-I) and 88 K (1e-I). The stabilization of the 1e-I state of 1-DCE is due to the presence of host–guest hydrogen bonding that enables to suppress the electron-donation ability of D even in an identical framework with 1.

Original languageEnglish
Pages (from-to)7351-7356
Number of pages6
JournalAngewandte Chemie - International Edition
Volume58
Issue number22
DOIs
Publication statusPublished - 2019 May 27

Keywords

  • electron transfer
  • host–guest interactions
  • hydrogen bonding
  • magnetic sponges
  • theoretical calculations

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Host–Guest Hydrogen Bonding Varies the Charge-State Behavior of Magnetic Sponges'. Together they form a unique fingerprint.

Cite this