Abstract
This paper reports on the synthesis, X-ray, and magnetic properties of tetranuclear CuII complex [CuL4] with square-like structure. A Schiff base ligand used for synthesis in this work derives from condensation of acetylacetone with DL-valine amino acid. The structure of the synthesized ligand was investigated by FTIR and NMR. Investigation of the crystal packing diagrams demonstrates extensive C–H⋯O interactions of hydrogen bonding, causing to the production of network structures. The complex exhibits exchange interaction among the CuII ions by a bridging carboxylate pathway. Analysis of the magnetic data through spin Hamiltonians of the form Ĥ=-2J(Ŝ1Ŝ4+Ŝ4Ŝ2+Ŝ2Ŝ3+Ŝ3Ŝ1)-2J′(Ŝ1Ŝ2+Ŝ3Ŝ4) (J has a positive value for a ferromagnetic interaction and negative value for an antiferromagnetic interaction) lead to the following parameters set of best-fit: J = 3.04 cm−1, J′ = 0 cm−1, g = 2.09, and ZJ = −0.109 cm−1.
Original language | English |
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Pages (from-to) | 257-263 |
Number of pages | 7 |
Journal | Polyhedron |
Volume | 133 |
DOIs | |
Publication status | Published - 2017 |
Externally published | Yes |
Keywords
- Copper complex
- Magnetic properties
- Schiff base ligand
- Simulation
- Tetranuclear copper(II)
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry