Synthesis and structural characterization of copper(II) complexes with the 2′‐[1‐(2‐pyridinyl)ethylidene]oxalohydrazide ligand

Author: Bacchi Alessia  

Publisher: Springer Publishing Company

ISSN: 0340-4285

Source: Transition Metal Chemistry, Vol.28, Iss.8, 2003-11, pp. : 935-938

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Abstract

The octahedral copper(II) complex with two 2′‐[1‐(2‐pyridinyl)ethylidene]oxalohydrazide molecules was synthesized from bis(acetylacetonato)copper(II) and 2′‐[1‐(2‐pyridinyl)ethylidene]oxamohydrazide (Hapsox). The complex is unstable when not in solution. X‐ray analysis confirmed the tridentate coordination of the ligands in the monoanionic form. In addition, the stable tetrahedral copper(II) complex with one ligand molecule coordinated as a tridentate in the dianionic form was prepared by direct synthesis from Cu(NO3)2·3H2O and Hapsox, and characterized by elemental analysis, magnetic measurements and by i.r. and u.v./vis. spectrophotometry.

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