N,N'-Bis(2-quinolylcarbon-yl)hydrazine

Area of Science:

• Crystallography
• Solid-state chemistry
• Organic chemistry

Background:

• Understanding molecular packing and intermolecular interactions is crucial for predicting material properties.
• The specific compound C(20)H(14)N(4)O(2) has not been previously characterized in terms of its solid-state structure.
• Hydrogen bonding and C-H interactions play significant roles in supramolecular assembly.

Purpose of the Study:

• To determine the crystal structure of the title compound, C(20)H(14)N(4)O(2).
• To analyze the molecular conformation and identify key intermolecular interactions within the crystal lattice.
• To elucidate the packing arrangement and the formation of the 3D network.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystallographic data.
• Analysis of bond lengths, bond angles, and dihedral angles to describe molecular geometry.
• Identification and analysis of intra- and intermolecular hydrogen bonds and other non-covalent interactions.

Main Results:

• The compound C(20)H(14)N(4)O(2) crystallizes in the ortho-rhom-bic system.
• The molecule exhibits a non-planar conformation with a dihedral angle of 74.9° between the two amide groups.
• An intramolecular N-H⋯N hydrogen bond was observed, along with intermolecular N-H⋯O and C-H⋯O hydrogen bonds, and C-H⋯π interactions.
• These interactions lead to the formation of 1D chains along the c-axis, which are further interconnected into a 3D network.

Conclusions:

• The crystal structure of C(20)H(14)N(4)O(2) has been successfully elucidated.
• The study highlights the importance of both intramolecular and intermolecular interactions in directing crystal packing and forming a stable 3D network.
• The findings provide fundamental insights into the solid-state behavior of this class of organic compounds.