Download citation
Download citation
link to html
Differential scanning calorimetry in the range 173–303 K reveals the presence of a previously unknown metastable phase of 2-pyrrolidone, C4H7NO, with a melting point of 286 K. Its crystal structure at 173 K is described. The molecules crystallize as centrosymmetric dimers and are linked by N—H...O hydrogen bonds with each molecule adopting an unstrained envelope conformation. Theoretical calculations confirm a slight pyramidalization of the N atom.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablock manuscript

fcf

Structure factor file (CIF format)
Contains datablock 2206

CCDC reference: 129855

-1
Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds