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Determination of Crystal Structures

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In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

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Related Experiment Video

Updated: Jun 23, 2026

$On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature$

On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature

Published on: March 11, 2022

The new photocrystallography.

Philip Coppens¹

¹Department of Chemistry, State University of New York at Buffalo, 732 NS Complex, Buffalo, NY 14260-3000, USA. coppens@acsu.buffalo.edu

Angewandte Chemie (International Ed. in English)

|April 21, 2009

Summary

Recent photocrystallography research reveals a significant photoinduced increase in a solid's magnetic susceptibility. This phenomenon is linked to substantial alterations in the Nd-NC-Fe bond lengths upon light exposure.

Area of Science:

Photocrystallography
Solid-state chemistry
Magnetism

Background:

Investigating light-induced changes in material properties is crucial for developing advanced functional materials.
Understanding the relationship between molecular structure and magnetic behavior under external stimuli is a key challenge.

Discussion:

This study highlights a large photoinduced increase in magnetic susceptibility in a solid material.
Significant changes in the bond lengths of the Nd-NC-Fe moiety were observed, correlating with the magnetic response.

Key Insights:

Light can dramatically alter the magnetic properties of certain solids.
The Nd-NC-Fe bond geometry plays a critical role in the observed photoinduced magnetic changes.

Outlook:

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