One-pot synthesis of Mn-containing 2D framework based on 5-nitro-1,2,3-benzenetricarboxylic and 2-hydroxy-5-nitroisophthalic ligands: Synthesis, structure and magnetic properties

•A novel 2D coordination polymer based on MnII/MnIII clusters has been synthesized.•The ligand O2N-ipa was produced in situ during the hydrothermal synthesis.•Compound 1 shows antiferromagnetic interaction and excellent thermal stability.

An unprecedented Mn-containing polymer, namely, [Mn2IIMn2III(O2N-bta)(O2N-ipa)2(im)(OH)(H2O)2] (1) (O2N-H3bta = 5-nitro-1,2,3-benzenetricarboxylic acid, O2N-H3ipa = 2-hydroxy-5-nitroisophthalic acid, im = imidazole), has been hydrothermally synthesized by one-pot method with O2N-bta and in situ generated O2N-ipa and im ligands. Single crystal X-ray diffraction study reveals that compound 1 is constructed by tetranuclear mixed-valent MnII/MnIII clusters and exhibits a novel 2D framework. In addition, the magnetic properties and thermal stability of 1 were also discussed.

Graphical abstractA novel Mn-containing coordination polymer which is constructed by tetranuclear mixed-valent MnII/MnIII clusters has been synthesized under hydrothermal condition. The O2N-bta3 − and in situ generated O2N-ipa3 − anions exhibit the – ABAB′ – stacking mode in the 2D layer.Figure optionsDownload full-size imageDownload as PowerPoint slide