Researchers Improved Organic Crystal Analysis Methods
A new workflow combining NMR and PDF-Fit has enabled structural determination of nanocrystalline organic solids.
Updated on Oct. 6, 2026 in Chemistry
Scientists have developed a new analytical workflow that integrates Global-PDF-Fit with solid-state nuclear magnetic resonance (NMR) spectroscopy. This approach allows researchers to determine the crystal structures of organic molecules that were previously too poorly crystalline for standard diffraction techniques.
Why it matters
Traditional diffraction methods often fail to resolve the structure of materials with very small crystallite sizes. This new method overcomes those limitations by providing a more reliable way to elucidate complex local molecular arrangements.
The study utilized samples with crystallite sizes between 50 and 55 nm. Researchers employed restraints and proximity constraints derived from 1D and 2D magic angle spinning NMR experiments to guide structure ranking.
The players
Communications Chemistry
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The details
By reducing computational time and improving reliability, the workflow identifies the structure of organic solids like 5-aminosalicylic acid and S-naproxen. The integration of spectroscopic constraints helps bridge the gap where standard crystallography falls short.
Timeline
The research findings were published in Communications Chemistry on October 6, 2026.
The Big Picture
This workflow follows the pattern set by the development of solid-state NMR structure determination protocols by expanding the range of analyzeable organic materials. It marks a significant departure from traditional diffraction-based limitations, potentially altering how crystalline structures are validated in chemistry.
This development could accelerate the design of new pharmaceuticals by allowing chemists to rapidly analyze materials that were previously too disordered to characterize. Faster structure determination leads to more efficient drug discovery and development cycles.
The takeaway
This method offers a robust solution for characterizing organic compounds that appear disordered or nanocrystalline. Researchers can use this combined approach to improve the accuracy of molecular structure ranking in future studies.
Further reading
For more on the latest analytical techniques in the field, explore the Chemistry section.
More information
View the complete Nature Communications Chemistry research article for full technical details.
Source note: This article includes information reported by Nature.
