l-Asparagine-l-tartaric acid (1/1)

Area of Science:

• Crystallography
• Supramolecular Chemistry
• Materials Science

Background:

• Understanding the self-assembly of organic molecules is crucial for designing new materials.
• Amino acids and organic acids are fundamental building blocks in chemistry and biology.
• Investigating hydrogen bonding interactions reveals insights into crystal packing and material properties.

Purpose of the Study:

• To elucidate the crystal structure of the compound formed between an amino acid (zwitterionic form) and tartaric acid.
• To characterize the hydrogen bonding network governing the molecular arrangement.
• To understand the formation of layered structures and the overall 3D framework.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed to determine the precise atomic arrangement.
• Hydrogen bond analysis (O-H⋯O, N-H⋯O, C-H⋯O) was performed to identify intermolecular interactions.
• Crystal structure visualization and analysis of packing motifs.

Main Results:

• The amino acid component exists as a zwitterion, while tartaric acid remains un-ionized.
• Tartaric acid molecules form layers parallel to the ab plane via O-H⋯O hydrogen bonds.
• Amino acid molecules also form layers parallel to the ab plane through N-H⋯O and C-H⋯O hydrogen bonds.
• Alternating layers of tartaric acid and amino acid are interconnected by N-H⋯O and O-H⋯O hydrogen bonds, forming a 3D framework.

Conclusions:

• The study successfully determined the crystal structure of the amino acid-tartaric acid compound.
• Hydrogen bonding plays a critical role in organizing the molecules into a layered and subsequently a three-dimensional architecture.
• The findings provide a detailed understanding of supramolecular assembly in this specific organic system.