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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
2,3-Diamino-phenazine tetra-hydrate
Xiao-Feng Li1, Yan An, Yan-Sheng Yin
1Institute of Marine Materials and Engineering, Shanghai Maritime University, Shanghai 200135, People's Republic of China.
Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
Summary
This study details the crystal structure of a copper-o-phenylenediamine compound. The structure features π-π stacking and hydrogen bonds, forming a 3D framework with water molecules.
Area of Science:
- Crystal engineering
- Coordination chemistry
- Supramolecular chemistry
Background:
- o-phenylenediamine is a versatile organic ligand.
- Copper acetate is a common copper source in coordination chemistry.
- Understanding crystal structures informs material properties.
Purpose of the Study:
- To synthesize and characterize the crystal structure of a novel compound formed from o-phenylenediamine and copper acetate.
- To investigate the intermolecular interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was used to determine the crystal structure.
- The compound was synthesized via a room-temperature solution method.
Main Results:
- The crystal structure of C(12)H(10)N(4)·4H(2)O was successfully elucidated.
- Significant π-π stacking interactions were observed with a centroid-centroid separation of 3.575(2) Å.
- A three-dimensional framework was formed through various intermolecular hydrogen bonds (O-H⋯O, N-H⋯O, N-H⋯N, O-H⋯N) involving the organic molecules and water molecules.
Conclusions:
- The synthesis yielded a well-defined crystalline structure of a copper-o-phenylenediamine adduct with water.
- The crystal packing is dominated by π-π stacking and extensive hydrogen bonding networks.
- These interactions stabilize the three-dimensional framework, providing insights into supramolecular assembly.
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