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
|
|
Funding (3)
|
1
|
Ministry of Science and Higher Education of the Russian Federation
|
|
|
2
|
Ministry of Science and Higher Education of the Russian Federation
|
FENW-2023-0011
|
|
3
|
Ministry of Science and Higher Education of the Russian Federation
|
ГЗ-2024-2028
|
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.