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Pyrazine-2,3-dicarboxamide

Vishweshwar¹, Nangia, Lynch

¹School of Chemistry, University of Hyderabad, Hyderabad 500 046, India.

Acta Crystallographica. Section C, Crystal Structure Communications

|December 19, 2000

Summary

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The crystal structure of a diamide molecule reveals a unique staircase-like arrangement. This pattern is formed by interconnected hydrogen bonds between carboxamide and pyrazine groups.

Area of Science:

Crystallography
Supramolecular Chemistry
Organic Chemistry

Background:

Understanding molecular interactions is key in crystal engineering.
Hydrogen bonding plays a crucial role in directing crystal packing.
Diamide compounds offer diverse structural possibilities.

Purpose of the Study:

To elucidate the crystal structure of the title diamide (C(6)H(6)N(4)O(2)).
To analyze the hydrogen bonding network governing the molecular arrangement.
To describe the resulting supramolecular architecture.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the three-dimensional structure.
Analysis of intermolecular interactions, specifically hydrogen bonds, was performed.

Related Experiment Videos

Crystal structure visualization and analysis tools were utilized.

Main Results:

The crystal structure of C(6)H(6)N(4)O(2) was successfully determined.
Linear tapes of carboxamide N-H···O and pyrazine C-H···N hydrogen-bond dimers were identified.
These tapes are interconnected by N-H···O hydrogen bonds, forming a staircase-like supramolecular pattern.

Conclusions:

The study reveals a novel staircase-like crystal packing in the title diamide.
The hydrogen bonding network dictates the formation of this specific supramolecular architecture.
This finding contributes to the understanding of crystal engineering principles for diamide compounds.