Hydrogen bonding mediated magnetic exchange interactions in a Cu(II) complex based on o-phenylenedioxydiacetato ligand: synthesis, crystal structure and magnetic properties

Krešáková, Lenka ; Stolárová, Monika Pataky ; Tomás, Milagros ; Titiš, Ján ; Falvello, Larry R. (Universidad de Zaragoza) ; Cernák, Juraj

Resumen: Single crystals of the Cu(II) complex [Cu(PDOA)(H2O)3]n (1) with the O-donor ligand (H2PDOA = o-phenylenedioxydiacetic acid) were synthesized and studied. The crystal structure of 1 is formed by zig-zag chains in which the Cu(II) atoms are linked by bridging PDOA2- ligands in a bis(monodentate) fashion via carboxylate oxygen donor atoms. The Cu(II) central atom is penta-coordinated by five oxygen atoms from two different PDOA2- ligands and three oxygen atoms of the aqua ligands yielding an O2O3 donor set. Hydrogen bonds of the O-H···O type afford a 2D supramolecular structure with short distances of 4.8562(7) and 5.1431(7) Å between the Cu(II) atoms. DC magnetic studies in the temperature range 2 – 300 K revealed antiferromagnetic exchange interactions via hydrogen bonds which were corroborated by theoretical calculations.

Idioma: Inglés

DOI: 10.1016/j.molstruc.2025.143985

Año: 2025

Publicado en: JOURNAL OF MOLECULAR STRUCTURE 1350, Part 1 (2025), 143985 [9 p.]
ISSN: 0022-2860

Financiación: info:eu-repo/grantAgreement/ES/DGA/E11-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-124880NB-I00

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)