Related Experiment Video
Updated: May 22, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
catena-Poly[[triaquacopper(II)]-μ(2)-furan-2,5-dicarboxyl-ato-κ(4)O(1),O(2):O(2),O(2')]
1School of Chemical Engineering, Changchun University of Technology, Changchun 130012, People's Republic of China.
Abstract:
In the title compound, [Cu(C(6)H(2)O(5))(H(2)O)(3)](n), an infinite chain is formed along [001] by linking of the Cu(OH(2))(3)O(4) cluster with one carboxyl-ate group of the furan-2,5-dicarboxyl-ate ligand. Adjacent chains are linked by O(water)-H⋯O hydrogen-bonding inter-actions. The Cu(OH(2))(3)O(4) cluster displays a penta-gonal bipyrimadal geometry with two weak coordinations [Cu-O(furan) = 2.790 (2) Å) and Cu-O(carboxyl-ate) = 2.684 (2) Å] and two water mol-ecules located in axial positions.
Related Concept Videos
Complexometric Titration: Ligands
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group with both...
EDTA: Chemistry and Properties
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Coordination Compounds and Nomenclature

