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dl-Alaninium iodide.

Kevin Lamberts¹, Ulli Englert

¹Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.

Acta Crystallographica. Section E, Structure Reports Online

|June 22, 2012

Summary

This summary is machine-generated.

The crystal structure of dl-alanine hydro-iodide reveals homochiral helices formed by hydrogen-bonded cations. Iodide anions link these chains, creating a 2D network in the ab plane.

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Area of Science:

Crystallography
Solid-state chemistry
Organic chemistry

Background:

dl-alanine hydro-iodide is an organic salt composed of N-protonated cations and iodide anions.
Understanding the crystal structure is crucial for predicting material properties.

Purpose of the Study:

To determine the detailed crystal structure of dl-alanine hydro-iodide.
To elucidate the intermolecular interactions and network formation within the crystal.

Main Methods:

Single-crystal X-ray diffraction was employed to analyze the crystal structure.
Analysis of hydrogen bonding and crystallographic symmetry was performed.

Main Results:

The crystal structure consists of homochiral helices of N-protonated dl-alanine cations aligned along the [010] direction.
Iodide anions act as hydrogen bond acceptors, linking the helical chains into a two-dimensional network in the ab plane.
Neighboring chains exhibit opposite chirality due to crystallographic inversion centers.

Conclusions:

The study provides a detailed description of the dl-alanine hydro-iodide crystal structure.
The identified 2D network highlights the role of hydrogen bonding and anion interactions in organizing organic salts.