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Abstract <p>A novel cationic complexes, [Cu<sub>4</sub>Ce<sub>2</sub>·(H<sub>2</sub>L)<sub>4</sub>(NO<sub>3</sub>)<sub>4</sub>(H<sub>2</sub>O)<sub>3</sub>](NO<sub>3</sub>)<sub>2</sub>·5H<sub>2</sub>O·2MeOH was synthesized, characterized, and studied using XRD, TG/DTG/DSC techniques, as well as measurement of both AC &amp; DC magnetic susceptibility. Analyzing of the results exhibited that this complex crystallize as (NO<sub>3</sub>)-bridged structures, whereas Cerium ion of lanthanide(III) family acts as a linkage connecting two [CuH<sub>2</sub>L] coordination subunits. In each hetero-tri-nuclear section, asymmetry structure was created in the degree of planarity of the bridging CuO<sub>2</sub>Ln segments. In contrast of Cu(II) ions, which are mostly six-coordinate with octahedral geometry and occasionally are five with distorted square pyramidal, Ln(III) ions including Ce(III) are nine-coordinate. In addition, through AC and DC magnetic susceptibility it was confirmed temperature dependence of the magnetic susceptibility for these complexes. Finally, the field-dependent magnetization of the ferromagnetic interaction between centers Cu(II) and Ce(III) was discussed through both experimental and DFT calculation.</p>

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Alternating Current and Direct Current Magnetic Susceptibility Study on a Novel Polydentate Schiff Base (Salen Ligands)–Cerium(III) Complex: Synthesis, Characterization, Thermal, and DFT Studies

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • M. Monajjemi,
  • F. Mollaamin,
  • P. Gilandoust,
  • P. Moeni,
  • Z. Khavari,
  • S. Shahriari,
  • S. Mohammadi

摘要

Abstract

A novel cationic complexes, [Cu4Ce2·(H2L)4(NO3)4(H2O)3](NO3)2·5H2O·2MeOH was synthesized, characterized, and studied using XRD, TG/DTG/DSC techniques, as well as measurement of both AC & DC magnetic susceptibility. Analyzing of the results exhibited that this complex crystallize as (NO3)-bridged structures, whereas Cerium ion of lanthanide(III) family acts as a linkage connecting two [CuH2L] coordination subunits. In each hetero-tri-nuclear section, asymmetry structure was created in the degree of planarity of the bridging CuO2Ln segments. In contrast of Cu(II) ions, which are mostly six-coordinate with octahedral geometry and occasionally are five with distorted square pyramidal, Ln(III) ions including Ce(III) are nine-coordinate. In addition, through AC and DC magnetic susceptibility it was confirmed temperature dependence of the magnetic susceptibility for these complexes. Finally, the field-dependent magnetization of the ferromagnetic interaction between centers Cu(II) and Ce(III) was discussed through both experimental and DFT calculation.