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Bis[μ-3-(1H-benzimidazol-2-yl)benzoato]dicopper(I)
Ke-Wei Lei1, Dong-Guo Xia, Jie Li
1State Key Laboratory Base of Novel Functional Materials and Preparation Science, Institute of Solid Materials Chemistry, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China.
This study details the crystal structure of a copper(I) complex, [Cu(2)(C(14)H(9)N(2)O(2))(2)]. The dimeric copper complex exhibits unique π-π stacking and hydrogen bonding, influencing its molecular packing in the solid state.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Supramolecular Chemistry
Background:
- Understanding the self-assembly of metal complexes is crucial for designing novel materials.
- The role of non-covalent interactions, such as π-π stacking and hydrogen bonding, dictates crystal packing and material properties.
Purpose of the Study:
- To elucidate the crystal structure and supramolecular assembly of the dimeric copper(I) complex, [Cu(2)(C(14)H(9)N(2)O(2))(2)].
- To investigate the intermolecular interactions governing the packing of the complex in the solid state.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed to determine the three-dimensional structure of the complex.
- Analysis of crystallographic data to identify and quantify intermolecular interactions, including π-π stacking and hydrogen bonds.
Main Results:
- The dimeric copper(I) complex, [Cu(2)(C(14)H(9)N(2)O(2))(2)], crystallizes with the molecule situated on a center of symmetry.
- Observed π-π stacking interactions between imidazole and benzene rings with mean inter-planar distances of 3.754(3) and 3.624(3) Å.
- An intermolecular N-H⋯O hydrogen bond links the dimers, and the two-coordinate Cu(I) atom exhibits an O-Cu-N bond angle of 176.3(2)° with a Cu⋯Cu distance of 5.100(2) Å.
Conclusions:
- The crystal structure reveals a well-defined dimeric copper(I) complex stabilized by specific non-covalent interactions.
- The observed packing arrangement, driven by π-π stacking and hydrogen bonding, highlights the importance of these forces in supramolecular assembly of copper complexes.
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