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Synthesis, crystal structure, and magnetic properties of a new tetranuclear Cu(II) Schiff base compound |
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| Authors: | Moumita Biswas Javier Tercero Samiran Mitra |
| Affiliation: | a Department of Chemistry, Jadavpur University, Kolkata 700 032, India b Groupe de Cristallographie et Ingénierie Moléculaire, Laboratoire des Multimatériaux et Interfaces, UMR 5615 Université Claude Bernard Lyon 1, Bât. Jules Raulin 43 Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France c Department de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain |
| Abstract: | A new tetranuclear Cu(II) compound [Cu4(HL)2(L)2(ClO4)2] (1) was synthesized from the reaction of Cu(ClO4)2 · 6H2O with Schiff base ligand (H2L) condensed from ethanolamine with 2-hydroxyacetophenone. X-ray diffraction studies revealed that 1 is formed from the self-assembly of two dinuclear units [Cu2(HL)(L)(ClO4)] through the doubly phenoxo bridging. The variable temperature magnetic susceptibility measurements were performed between 300 K and 2 K and show χMT value for 1 at 300 K is 1.395 cm3 mol−1 K and fall to 0.0459 cm3 mol−1 K at 2 K. These values are smaller than that expected for tetranuclear copper (II) units, indicating antiferromagnetic coupling present in the compound. This result is also confirmed from the DFT calculations. |
| Keywords: | Tetranuclear Cu(II) compound Schiff base Crystal structure VTM DFT calculation |
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