Synthesis and magnetic properties of two cobalt-coordination polymers containing 1,10-phenanthroline and alkyl dicarboxylates ligands

The structural and magnetic properties of two novel one-dimensional coordination compounds were investigated in the solid crystalline state to support studies of their potential as multifunctional materials. The new compounds are based on Co(II) and are named {[Co-4(glu)(4)(phen)(4)(H2O)(2)]middotH2O}(n) (1) and {[Co-2(azl)(2)(phen)(2)(H2O)(2)]}(n) (2) (glu = glutarate, azl = azelate, and phen = 1,10-phenanthroline). Compound (2) is the first crystal structure of a cobalt-based coordination polymer with the mixed ligands azl and phen. The crystal structures of the compounds were determined by single crystal X-ray diffraction; where the influence of the alkyl dicarboxylates on the formation of a 1D looped or a single chain coordination polymer was observed. The FT-IR analysis confirms the coordination modes adopted by the mixed ligands azl and phen and the thermal analysis suggests some thermal stability up to 150-200 & DEG;C. Supramolecular analysis suggests an important role of the non-conventional C(sp(2))-HmiddotmiddotmiddotO hydrogen bond patterns in the crystals. Finally, weak antiferromagnetic interactions were observed in both complexes.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

The structural and magnetic properties of two one-dimensional coordination compounds based on Co(II) were investigated in the solid crystalline state. The crystal structures were determined by single crystal X-ray diffraction, revealing the influence of alkyl dicarboxylates on the formation of coordination polymers. FT-IR analysis and thermal analysis provided insights into the coordination modes and thermal stability of the compounds. Supramolecular analysis highlighted the importance of non-conventional hydrogen bond patterns in the crystals. Weak antiferromagnetic interactions were observed in both complexes.