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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
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Related Experiment Video

Updated: Feb 7, 2026

Automated Protocols for Macromolecular Crystallization at the MRC Laboratory of Molecular Biology

Automated Protocols for Macromolecular Crystallization at the MRC Laboratory of Molecular Biology

Published on: January 24, 2018

Dislocations in molecular crystals.

Isabel A Olson¹, Alexander G Shtukenberg¹, Bart Kahr¹

¹Department of Chemistry and Molecular Design Institute, New York University, New York City, NY 10003, United States of America.

Reports on Progress in Physics. Physical Society (Great Britain)

|July 31, 2018

Summary

This summary is machine-generated.

Dislocations in molecular crystals are poorly understood due to their complex structures. This review explores their generation, properties, and effects on crystal applications, from electronics to pharmaceuticals.

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Area of Science:

Crystallography and Materials Science
Focuses on the study of molecular crystals and their defects.

Background:

Dislocations in molecular crystals are complex and poorly understood compared to those in hard materials.
The low symmetry and flexible units of molecular crystals challenge traditional analysis and modeling techniques.

Purpose of the Study:

To review the generation, structure, and physicochemical consequences of dislocations in molecular crystals.
To highlight the need for new approaches to understand dislocations in molecular crystallography.

Main Methods:

Literature review of existing research on dislocations in molecular crystals.
Comparative analysis with dislocations in metals, ceramics, and semiconductors.

Main Results:

Molecular crystal dislocations exhibit unique characteristics due to flexible, low-symmetry building units.
These dislocations significantly influence crystal growth, mechanical properties, and overall material behavior.

Conclusions:

Understanding molecular crystal dislocations is crucial for advancing fields like plastic electronics, mechanical actuators, and pharmaceutical formulation.
New analytical and modeling strategies are required to fully elucidate the role of dislocations in molecular crystals.