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Abstract
The reaction of phenyl 2-pyridyl ketoxime (PhPyCNOH) with Cu(BF 4 ) 2 · 6H 2 O in methanol results in the trinuclear complex [Cu 3 (OH)(PhpyCNO) 3 (H 2 O)](BF 4 ) 2 (1), which has been characterized by elemental analyses, IR spectrum and single-crystal X-ray diffraction techniques. The structure of 1 exhibits a triangle of Cu(II) ions, centered by a triply bridging hydroxo ligand and with three edge-bridging oximate groups from the three PhPyCNO− ions. The Cu 3 OH units have an average Cu-O distance of 1.962(4) Å, an average Cu-Cu distance of 3.177(4) Å, and an average Cu-O-Cu angle of 108.2(2)°. Variable-temperature magnetic susceptibility studies reveal an antiferromagnetically-coupled system showing antisymmetric exchange.
This work was supported by the National Natural Science Foundation of China (No. 20971004), the Key Project of Chinese Ministry of Education (No. 210102), and the Natural Science Foundation of Educational Commission of Anhui Province of China (No. KJ2010A229).