doi:10.1016/j.molstruc.2025.143985engKrešáková, LenkaStolárová, Monika PatakyTomás, MilagrosTitiš, JánFalvello, Larry R.Cernák, JurajHydrogen bonding mediated magnetic exchange interactions in a Cu(II) complex based on o-phenylenedioxydiacetato ligand: synthesis, crystal structure and magnetic propertiesART-2025-145429Single 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.2025http://zaguan.unizar.es/record/16296710.1016/j.molstruc.2025.143985http://zaguan.unizar.es/record/162967oai:zaguan.unizar.es:162967info:eu-repo/grantAgreement/ES/DGA/E11-23Rinfo:eu-repo/grantAgreement/ES/MICINN/PID2021-124880NB-I00JOURNAL OF MOLECULAR STRUCTURE 1350, Part 1 (2025), 143985 [9 p.]by-nc-ndhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.esinfo:eu-repo/semantics/embargoedAccess