(Z)-2,2,2-Trichloro-N-cyano-acetamidine

Area of Science:

• Crystallography
• Organic Chemistry
• Materials Science

Background:

• Understanding the crystal packing and intermolecular interactions of novel organic compounds is crucial for predicting their physical properties.
• The specific functional group -C(NH(2))=NCN presents unique electronic and structural characteristics.

Purpose of the Study:

• To elucidate the crystal structure of the title compound, C(3)H(2)Cl(3)N(3).
• To investigate the role of hydrogen bonding in the observed molecular geometry and bond characteristics.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the three-dimensional molecular and crystal structure.
• Analysis of bond lengths, bond angles, and intermolecular interactions (hydrogen bonding) was performed.

Main Results:

• The compound crystallizes as the Z isomer, with the -C(NH(2))=NCN functional group exhibiting near planarity.
• A significant network of N-H⋯N hydrogen bonds was identified, leading to the formation of dimers and ribbons.
• The formal carbon-nitrogen and carbon-double-bond-nitrogen bonds show near-equivalence (Δ(CN) = 0.008 Å), attributed to hydrogen bonding.

Conclusions:

• The crystal structure is dominated by a robust hydrogen bonding network, influencing molecular planarity and bond character.
• Hydrogen bonding plays a key role in stabilizing the Z isomer and mediating the observed C-N bond lengths.
• The findings provide insights into the structure-property relationships of this nitrogen-rich compound.