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Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
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1,3-Bis(chloro-meth-yl)-2-methyl-5-nitro-benzene
Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
Summary
A novel natural product, C(9)H(9)Cl(2)NO(2), was identified from a South China Sea mangrove fungus. Its crystal structure reveals offset molecular stacking via pi-pi interactions and specific intermolecular forces.
Area of Science:
- Natural Product Chemistry
- Crystallography
- Fungal Metabolomics
Background:
- Mangrove ecosystems harbor diverse microbial communities with potential for novel compound discovery.
- Endophytic fungi, residing within plant tissues, are a prolific source of unique secondary metabolites.
- The South China Sea coast is a biodiversity hotspot with largely unexplored microbial resources.
Purpose of the Study:
- To isolate and characterize a novel natural product from an endophytic fungus.
- To elucidate the crystal structure and intermolecular interactions of the isolated compound.
- To investigate the potential of mangrove-derived fungi as a source of new chemical entities.
Main Methods:
- Isolation and purification of the natural product from fungal cultures.
- Single-crystal X-ray diffraction analysis to determine the molecular and crystal structure.
- Spectroscopic methods for structural confirmation (e.g., NMR, Mass Spectrometry).
Main Results:
- The title compound, C(9)H(9)Cl(2)NO(2), was successfully isolated and identified.
- Crystal structure analysis revealed molecules lying on twofold axes, forming offset stacks.
- Face-to-face π-π interactions, C-H⋯O interactions, and Cl⋯Cl contacts were observed in the crystal lattice.
Conclusions:
- The study successfully identified and structurally characterized a new natural product from a mangrove endophytic fungus.
- The crystal structure provides insights into the packing arrangement and intermolecular forces governing the solid state.
- This discovery highlights the potential of marine-derived endophytic fungi in natural product drug discovery.
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