A copper complex of an unusual hydroxy–carboxylate ligand: [Cu(bpy)(C4H4O6)]

A copper complex of an unusual hydroxy–carboxylate ligand: [Cu(bpy)(C4H4O6)]

A copper(II) complex, (2,2′-bipyridine-κ2N,N′)[2-hydroxy-2-(hydroxymethyl-κO)propanedioato-κ2O1,O3]copper(II), [Cu(C4H4O6)(C10H8N2)], containing the unusual anionic chelating ligand 2-(hydroxymethyl)tartronate, has been synthesized. [Cu(bpy)2(NO3)](NO3) was mixed with ascorbic acid and Dabco (1,4-di...

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Bibliographic Details
Main Authors: Sen Gao, Frank R. Fronczek, Andrew W. Maverick
Format: Article
Language:English
Published: International Union of Crystallography 2021-03-01
Series:Acta Crystallographica Section E: Crystallographic Communications
Subjects:
crystal structure
copper(ii) complex
tartronate
square pyramidal
dimerization
Online Access:http://scripts.iucr.org/cgi-bin/paper?S2056989021001286
Description
Summary:A copper(II) complex, (2,2′-bipyridine-κ2N,N′)[2-hydroxy-2-(hydroxymethyl-κO)propanedioato-κ2O1,O3]copper(II), [Cu(C4H4O6)(C10H8N2)], containing the unusual anionic chelating ligand 2-(hydroxymethyl)tartronate, has been synthesized. [Cu(bpy)2(NO3)](NO3) was mixed with ascorbic acid and Dabco (1,4-diazabicyclo[2.2.2]octane) 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 C4H4O62− ligand, which occupies three coordination sites at Cu, has previously been identified as an oxidation product of ascorbate ion.
ISSN:2056-9890

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