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Poly[di-μ-glycinato-copper(II)]: a two-dimensional coordination polymer.
Fabienne Gschwind1, Martin Jansen
1Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
Acta Crystallographica. Section E, Structure Reports Online
|November 8, 2011
Summary
This study details a two-dimensional coordination polymer, [Cu(C(2)H(4)NO(2))(2)](n), featuring a distorted octahedral copper center. The structure exhibits a strong Jahn-Teller effect due to differing copper-ligand bond lengths, forming a 3D network via hydrogen bonds.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Crystallography
Background:
- Coordination polymers offer tunable properties for advanced applications.
- Understanding metal-ligand interactions is crucial for designing novel materials.
Purpose of the Study:
- To characterize the crystal structure and bonding of the novel coordination polymer [Cu(C(2)H(4)NO(2))(2)](n).
- To investigate the coordination geometry around the copper(II) center and its implications.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond lengths and angles elucidated the coordination environment and electronic effects.
Main Results:
- A 2D coordination polymer with a distorted octahedral copper(II) center coordinated by bidentate glycine ligands was identified.
- Axial Cu-O bonds were significantly longer than equatorial Cu-O and Cu-N bonds, indicating a strong Jahn-Teller effect.
- The 2D networks self-assemble into a 3D structure through intermolecular N-H⋯O hydrogen bonds.
Conclusions:
- The study reveals the detailed structure of [Cu(C(2)H(4)NO(2))(2)](n), highlighting the influence of the Jahn-Teller effect on its coordination geometry.
- The hydrogen bonding interactions play a key role in the formation of the extended three-dimensional architecture.
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