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A copper complex of an unusual hy-droxy-carboxyl-ate ligand: [Cu(bpy)(C4H4O6)].

ABSTRACT: A copper(II) complex, (2,2'-bi-pyridine-κ2 N,N')[2-hy-droxy-2-(hy-droxy-methyl-κO)propane-dioato-κ2 O 1,O 3]copper(II), [Cu(C4H4O6)(C10H8N2)], containing the unusual anionic chelating ligand 2-(hy-droxy-meth-yl)tartronate, has been synthesized. [Cu(bpy)2(NO3)](NO3) was mixed with ascorbic acid and Dabco (1,4-di-aza-bicyclo-[2.2.2]octa-ne) in DMF (dimethylformamide) solution in the presence of air to produce the title compound. The structure consists of square-pyramidal complexes that are joined by Cu⋯O contacts [2.703 (2) Å] into centrosymmetric dimers. The C4H4O6 2- ligand, which occupies three coordination sites at Cu, has previously been identified as an oxidation product of ascorbate ion.

SUBMITTER: Gao S 

PROVIDER: S-EPMC8061107 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

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A copper complex of an unusual hy-droxy-carboxyl-ate ligand: [Cu(bpy)(C<sub>4</sub>H<sub>4</sub>O<sub>6</sub>)].

Gao Sen S   Fronczek Frank R FR   Maverick Andrew W AW  

Acta crystallographica. Section E, Crystallographic communications 20210219 Pt 3

A copper(II) complex, (2,2'-bi-pyridine-κ<sup>2</sup> <i>N</i>,<i>N</i>')[2-hy-droxy-2-(hy-droxy-methyl-κ<i>O</i>)propane-dioato-κ<sup>2</sup> <i>O</i> <sup>1</sup>,<i>O</i> <sup>3</sup>]copper(II), [Cu(C<sub>4</sub>H<sub>4</sub>O<sub>6</sub>)(C<sub>10</sub>H<sub>8</sub>N<sub>2</sub>)], containing the unusual anionic chelating ligand 2-(hy-droxy-meth-yl)tartronate, has been synthesized. [Cu(bpy)<sub>2</sub>(NO<sub>3</sub>)](NO<sub>3</sub>) was mixed with ascorbic acid and Dabco (1,4-di-aza-bicyc  ...[more]

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