Stable Triarylmethyl Radicals and Cobalt(II) Ions Based 1D/2D Coordination Polymers.
cobalt ion
magnetic property
open-shell coordination polymer
stable organic radical
triarylmethyl radical
Journal
Chemistry (Weinheim an der Bergstrasse, Germany)
ISSN: 1521-3765
Titre abrégé: Chemistry
Pays: Germany
ID NLM: 9513783
Informations de publication
Date de publication:
01 Jun 2022
01 Jun 2022
Historique:
received:
03
03
2022
pubmed:
24
3
2022
medline:
24
3
2022
entrez:
23
3
2022
Statut:
ppublish
Résumé
The incorporation of organic radicals into coordination polymers was considered as a promising strategy to promote metal-ligand exchange interactions, but there are only a very limited number of stable organic radical-based ligands that can serve well such a purpose. Herein, we report two new tris(2,4,6-trichlorophenyl)methyl (TTM) radical-based ligands L1 and L2 with two and three imidazole substituents, respectively. The imidazole unit serves as a coordination site and it can also stabilize the TTM radical by intramolecular donor-acceptor interaction. Coordination of L1 and L2 with cobalt(II) ions gave the corresponding one- (CoCP-1) and two-dimensional (CoCP-2) coordination polymers, the structures of which were confirmed by X-ray crystallographic analysis. Magnetic measurements and theoretical calculations suggest antiferromagnetic coupling between the paramagnetic cobalt(II) ions and the radical ligands. Our study provides a rational design for stable organic radical-based ligands and further demonstrated the feasibility of a metal-radical approach toward magnetic materials.
Identifiants
pubmed: 35319794
doi: 10.1002/chem.202200687
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e202200687Subventions
Organisme : National Research Foundation Singapore
ID : NRF-NRFI05-2019-0005
Organisme : National Research Foundation Singapore
ID : A2084c0164
Organisme : Ministry of Education - Singapore
ID : MOE2019-T2-1-030
Informations de copyright
© 2022 Wiley-VCH GmbH.
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