Copper(II) complexes with a flexible oxamato ligand |
| |
| Authors: | Marta Martinez Belmonte Daniel J. Price |
| |
| Affiliation: | (1) WestCHEM, Department of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK;(2) Present address: ICIQ-Institute of Chemical Research of Catalonia, Av. Paisos Catalans 16, Tarragona, 43007, Spain; |
| |
| Abstract: | We report on a convenient synthesis of the ligand precursor, diethylethylene-1,2-bis(oxamate), (Et2H2oeo, 1), and show how a partial and preferential hydrolysis of the ester group can give rise to the dianionic ligand, (H2oeo)2−. Reaction of this ligand with Cu(II) affords the neutral dimeric species, [Cu2(H2oeo)2], which has a low aqueous solubility. We describe the crystal structure of the hydrate Cu2(H2oeo)2(H2O)4 (2) and report magnetic studies that show a weak exchange interaction in the solid. Under more basic conditions and in the presence of Cu(II) ions, we are able to avoid amide cleavage and yet deprotonate the amide group, resulting in the formation of the highly soluble [Cu(Hoeo)2]4− complex anion. The structure of (NBu4)4[Cu(Hoeo)2](H2O)4 (3) is described and compared with the recently reported anhydrous phase. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
