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A tetranuclear copper(II) complex with bis(o-aminobenzaldehyde)thiocarbohydrazone |
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| Authors: | Diana Dragancea Anthony W. Addison Michael J. Prushan Mihail D. Revenco |
| Affiliation: | a Laboratory of Coordination Chemistry, Institute of Chemistry, Academy of Sciences of Moldova, Academiei str. 3, MD-2028, Chisinau, Moldova b Chemistry Department, Drexel University, Philadelphia, PA 19104-2816, USA c STaRBURSTT-Cyberdiffraction Consortium and Chemistry Department, Youngstown State University, Youngstown, OH 44555-3663, USA d Chemistry Department, LaSalle University, Philadelphia, PA 19141-1108, USA e Chemistry Department, Memorial University, St. John’s, NF, Canada A1B 3X7 |
| Abstract: | Bis(o-aminobenzaldehyde)thiocarbohydrazone (HL) forms with copper(II) nitrate a tetranuclear complex [Cu2(L)(NO3)3]2·2H2O, in which two dinuclear units are joined by nitrate bridges. The dihydrazone ligand behaves ditopically, providing NNS and NNN binding sites, with the four coppers essentially in a square-pyramidal geometry. The tetranuclear molecule displays intramolecular magnetic interactions, with the antiferromagnetic exchange (−2J = 210(1) cm−1) between the copper(II) ions within each dinuclear moiety dominant over weak interdimer ferromagnetic coupling. |
| Keywords: | Copper(II) complexes Thiocarbohydrazone Schiff base X-ray structure Antiferromagnetism |
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