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Related Experiment Video

Updated: Jun 12, 2025

Modeling an Enzyme Active Site using Molecular Visualization Freeware

Modeling an Enzyme Active Site using Molecular Visualization Freeware

Published on: December 25, 2021

Hydrogen-bonded frameworks for conformational analysis of reactive substrates.

Alexandra M Dillon¹, Alexander G Shtukenberg¹, Krystyna M Demkiw¹

¹Department of Chemistry, New York University, New York City, New York, 10003, USA.

Chemical Communications (Cambridge, England)

|September 25, 2024

Summary

Guanidinium organosulfonate frameworks trapped halo-ketones for structural analysis. Single crystal X-ray diffraction confirmed molecular conformations matched computational predictions and Grignard reaction outcomes.

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Analyzing Protein Dynamics Using Hydrogen Exchange Mass Spectrometry

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Published on: November 29, 2013

Area of Science:

Supramolecular chemistry
Organic chemistry
Crystallography

Background:

Hydrogen-bonded host frameworks offer unique environments for guest molecule encapsulation.
Understanding guest molecule conformations within host lattices is crucial for predicting reaction pathways.

Purpose of the Study:

To investigate the structural characterization of alpha-halopropiophenones and alpha-halocyclooctanones.
To determine if encapsulated guest molecules adopt predictable conformations within Guanidinium organosulfonate (GS) host frameworks.

Main Methods:

Single crystal X-ray diffraction was employed to analyze the molecular structures of trapped guest molecules.
Guanidinium organosulfonate (GS) hydrogen-bonded host frameworks were synthesized and utilized for guest encapsulation.

Main Results:

The majority of encapsulated alpha-halopropiophenones and alpha-halocyclooctanones adopted conformations consistent with computational predictions.
Observed conformations aligned with the stereochemical outcomes expected from Grignard reactions involving these types of molecules.

Conclusions:

Guanidinium organosulfonate frameworks are effective hosts for trapping halo-ketones, enabling detailed structural determination.
The study validates the predictive power of computational analysis and stereochemical principles in understanding guest molecule behavior within supramolecular hosts.