l-Tryptophan 4-nitro-phenol tris-olvate

Area of Science:

• Crystallography
• Molecular structure analysis
• Chemical physics

Background:

• Understanding the precise arrangement of atoms and intermolecular forces is crucial for predicting material properties.
• Zwitterionic amino acids exhibit unique structural and chemical characteristics due to their charged nature.

Purpose of the Study:

• To elucidate the detailed crystal structure of a specific zwitterionic amino acid.
• To analyze the planar group arrangements, bond angles, and intermolecular interactions within the crystal lattice.

Main Methods:

• X-ray crystallography was employed to determine the three-dimensional structure.
• Analysis of atomic coordinates and deviations from idealized planes.
• Identification and characterization of hydrogen bonding and π-π stacking interactions.

Main Results:

• The zwitterionic amino acid consists of two nearly planar groups: the indole ring/Cβ and the carboxyl group/Cα/amine N.
• The angle between these planes is 39.47(9)°.
• The crystal structure is characterized by sheets formed by parallel networks stabilized by hydrogen bonds, nitro-π, and π-π stacking interactions.

Conclusions:

• The study provides a detailed structural description of the title compound.
• The observed intermolecular interactions, including hydrogen bonding and π-π stacking, are key to the crystal's cohesive structure.
• This structural information can inform future research on similar compounds and their potential applications.