New Form of a Chemical Compound
Author Information
Author(s): Schröder Bernd, Gomes Ligia R., Santos Luís M. N. B. F., Brandão Paula, Low John Nicolson
Primary Institution: CICECO, Departamento de Química, Faculdade de Ciências, Universidade do Aveiro
Hypothesis
The study aims to determine the structure of a second polymorph of N-(diethylaminothiocarbonyl)-N′-phenylbenzamidine.
Conclusion
The new polymorph crystallizes at a lower temperature and has a different structure compared to the previously reported form.
Supporting Evidence
- The new polymorph has five molecules in the asymmetric unit.
- The equivalent bond distances in the five molecules are in excellent agreement.
- The low temperature structure allows for more accurate comparisons with gas phase calculations.
Takeaway
Scientists found a new version of a chemical compound that looks different when it's colder.
Methodology
The structure was determined using X-ray crystallography at 150 K.
Limitations
The previous structure was determined at room temperature, which may have affected the accuracy of bond lengths.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website