Synthesis, Structure, and Magnetic Properties of Copper(II) Complexes with 2-(5-methoxy-1-methyl-benzimidazol-2-yl)-1-(4-Methoxyphenyl)Ethanol | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis, Structure, and Magnetic Properties of Copper(II) Complexes with 2-(5-methoxy-1-methyl-benzimidazol-2-yl)-1-(4-Methoxyphenyl)Ethanol Full article

Journal

Journal of Molecular Structure
ISSN: 0022-2860

Output data

Year: 2026, Volume: 1352, Number: Part 1, Article number : 144368, Pages count : 8 DOI: 10.1016/j.molstruc.2025.144368

Tags

Copper(II) complexes, Dinuclear complexes, Benzimidazole derivatives, Crystal structure, Magnetic properties, Antiferromagnetic exchange, DFT calculations

Authors

Koshchienko Yurii V. ¹ , Burlov Anatolii S. ¹ , Vlasenko Valery G. ² , Bogomyakov Artem S. ³ , Kolodina Alexandra A. ¹ , Zubavichus Yan V. ⁴ , Matyukhina Anna K. ⁵ , Kiskin Mikhail A. ⁵

Affiliations

1	Southern Federal University Institute of Physical and Organic Chemistry, Stachki ave. 194/2, 344090, Rostov-on-Don, Russian Federation
2	Southern Federal University Institute of Physics, Stachki ave. 194, 344090, Rostov-on-Don, Russian Federation
3	International Tomography Center, Siberian Branch of the Russian Academy of Sciences, Institutskaya St. 3a, 630090, Novosibirsk, Russian Federation
4	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Koltsovo, 630559, Russian Federation
5	Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation

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.

Koshchienko Y.V. , Burlov A.S. , Vlasenko V.G. , Bogomyakov A.S. , Kolodina A.A. , Zubavichus Y.V. , Matyukhina 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. NPart 1. 144368 :1-8. DOI: 10.1016/j.molstruc.2025.144368 WOS Scopus OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	Jun 24, 2025
Accepted:	Nov 11, 2025
Published online:	Nov 11, 2025
Published print:	Feb 15, 2026

Web of science:	WOS:001606333400002
Scopus:	2-s2.0-105019175707
OpenAlex:	W4415071478
publication_identifier.sciact_skif_identifier_type:	4172

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