Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1261, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2022.132820
Keywords
Coordination polymer; Cobalt; Mixed-ligand; Hydrogen bond topology; Antiferromagnetism
Categories
Funding
- Brazilian agency CNPq
- Brazilian agency CAPES
- Brazilian agency FAPERJ
- Brazilian agency FAPEMIG [CEX APQ 01283 14, CEX APQ-0008418, CEX APQ-0075019]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES/PNPD) [001]
- CNPq [404023/2019-3]
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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.
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.
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