A novel Cu(II) coordination polymer with chiral tetragonal space group based on a flexible 3,5-disubstituted 1,2,4-triazole ligand: Synthesis, crystal structure and magnetic properties

摘要

AbstractA novel Cu (II)-MOF, namely [Cu(Hhmt)]n(1) was obtained by employing copper nitrate and a triazole ligand (H3hmt) under hydrothermal conditions, where H3hmt=3,5-bis (hydroxymethyl)-1,2,4-triazole. Single crystal X-ray analysis reveals that complex1crystallizes in the chiral tetragonal space groupP43212 with a right-handed 43and a left-handed 21helical chains which lead to the formation of a 3D supramolecular structure. The phrase purity, IR spectra, thermal stabilities of1were also investigated. The nature of antiferromagnetic exchange of complex1is discussed based on the structure.Graphical abstractA novel 1,2,4-Triazole-based 3D coordination polymer1([Cu(Hhmt)]n) with two chiral helical chains was synthesized via hydrothermal reaction. Complex1has good thermal stability and exists strong antiferromagnetic interaction between copper ions.Display OmittedHighlights?A new 1,2,4-Triazole-based Cu(II) coordination polymer 1 have been designed, synthesized, and well-characterized.?The novel 3D coordination polymer 1 including two chiral helical chains and was synthesized via hydrothermal reaction.?PXRD pattern and TG analysis indicating that complex 1 has excellent phase purity and good thermal stability.?Magnetical studies have shown that there exists strong antiferromagnetic interaction between copper ions in complex 1.]]>