Affiliation:
1. Department of Chemistry, Tunghai University, Taichung 407, Taiwan
2. Instrumentation Center, National Cheng Kung University, Tainan 710, Taiwan
Abstract
By employing semi-flexible multi-N donor auxiliary ligands, namely 1,4-bis(5-pyrimidyl)benzene (bpmb) in conjunction with azide, novel Co(II) 2D coordination polymers have been successfully synthesized and structurally characterized, along with magnetic analysis. The resulting compound, {Co(N3)(bpmb)(H2O)2·H2O}n (1), exhibits a unique 2D structure comprised of interconnected Co(II) chains bridged by single end-to-end (EE) azide moieties. These chains are further linked by twisted trans-μ2-N,N′-bpmb auxiliary ligands, forming a grid-like network. Additionally, the layers are held together in a 3D arrangement through hydrogen bonding interactions between the coordination water and the N atom of the bpmb ligands. Importantly, magnetic investigations reveal that compound 1 displays weak ferromagnetism attributed to spin canting, with a critical temperature (Tc) of 12 K.
Funder
Tungahi University and National Science and Technology, Council
Reference41 articles.
1. Applications of metal-organic frameworks featuring multi-functional sites;Li;Coord. Chem. Rev.,2016
2. Coordination polymers for energy transfer: Preparations, properties, sensing applications, and perspectives;Zhang;Coord. Chem. Rev.,2015
3. Metal–organic framework composites: From fundamentals to applications;Li;Nanoscale,2015
4. Design, Chirality, and Flexibility in Nanoporous Molecule-Based Materials;Bradshaw;Acc. Chem. Res.,2005
5. A 3D Canted Antiferromagnetic Porous Metal−Organic Framework with Anatase Topology through Assembly of an Analogue of Polyoxometalate;Xiang;J. Am. Chem. Soc.,2005