Abstract: This study reports the synthesis and comprehensive characterization of two novel dinuclear copper(II) complexes derived from 2-(5-methoxy-1-methylbenzimidazol-2-yl)-1-(4-methoxyphenyl)ethanol (HL). The reaction of HL with copper(II) acetate hydrate and copper(II) nitrate trihydrate in tetrahydrofuran yielded dinuclear complexes formulated as [CuL(CH₃COO)]₂·2MeCN (1) and [CuLH(NO₃)DMF]₂·DMF (2), respectively. The compounds were characterized by elemental analysis, IR and ¹H NMR spectroscopy, and single-crystal X-ray diffraction analysis. Structural elucidation revealed that both complexes feature a Cu₂O₂ rhombic core with the copper centers bridged by alkoxide oxygen atoms. Magnetic susceptibility measurements in the temperature range of 5-300 K demonstrated strong antiferromagnetic exchange interactions in both complexes, with exchange coupling constants of J = -401 ± 11 cm⁻¹ for 1 and J = -445 ± 5 cm⁻¹ for 2. Broken-symmetry density functional theory (BS-DFT) calculations corroborated the experimental magnetic data and provided insight into the electronic structure and magnetic exchange pathways. The observed differences in magnetic behavior are discussed in relation to structural variations induced by the different coordinating anions.

Cite: Koshchienko Y.V. , Burlov A.S. , Vlasenko V.G. , Bogomyakov A.S. , Kolodina A.A. , Zubavichus Y.V. , Matiukhina A.K. , Kiskin M.A.
Synthesis, structure, and magnetic properties of copper(II) complexes with 2-(5-methoxy-1-methyl-benzimidazol-2-yl)-1-(4-Methoxyphenyl)Ethanol
Journal of Molecular Structure. 2026. V.1352. 144368 . DOI: 10.1016/j.molstruc.2025.144368 WOS Scopus OpenAlex

Dates:

Submitted:	Jun 24, 2025
Accepted:	Oct 11, 2025
Published online:	Oct 11, 2025
Published print:	Oct 22, 2025

Identifiers:

Web of science:	WOS:001606333400002
Scopus:	2-s2.0-105019175707
OpenAlex:	W4415071478

Citing: Пока нет цитирований

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