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Updated: Jun 1, 2026
06:46
Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
A triclinic polymorph of (E)-2-(2-nitro-ethen-yl)furan
1Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, People's Republic of China.
Summary
This study details the triclinic crystal structure of a compound with six independent molecules. The research confirms the E configuration of the C=C double bond and identifies C-H⋯O hydrogen bonds stabilizing the crystal lattice.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- Previous structural determination of the title compound was performed in the monoclinic P2(1)/n space group at 100 K.
- The current study investigates the compound's crystal structure in a different crystallographic system.
Purpose of the Study:
- To determine and describe the crystal structure of the title compound, C(6)H(5)NO(3), in the triclinic system.
- To analyze the molecular configurations and intermolecular interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction analysis.
- Crystallographic system determination (triclinic).
- Analysis of molecular geometry, including dihedral angles.
Main Results:
- The compound crystallizes in the triclinic system with six independent molecules in the asymmetric unit.
- All independent molecules exhibit an E configuration about the C=C double bond.
- Dihedral angles between furan rings and nitro-alkenyl groups range from 0.61(7)° to 5.03(7)°.
- Intermolecular C-H⋯O hydrogen bonding interactions stabilize the crystal structure.
Conclusions:
- The detailed crystal structure in the triclinic system provides new insights into the compound's solid-state arrangement.
- The consistent E configuration and observed hydrogen bonding are key features of the crystal packing.
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