Author:
Bernhardt Paul V.,Kvaskoff David,Veedu Rakesh Naduvile,Wentrup Curt
Abstract
Two polymorphs of 3-(3′-pyridyl)sydnone 4 have been investigated. It was established that the metastable P2/c form is the kinetically favoured product formed by recrystallization from solution, but this may be converted to the new, more stable, P21/c polymorph by sublimation or heating in the solid state.
Cited by
4 articles.
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1. 1,2,3-Oxadiazoles;Comprehensive Heterocyclic Chemistry IV;2022
2. Sublimation – a green route to new solid-state forms;CrystEngComm;2021
3. Sydnone Photochemistry: Direct Observation of Earl's Bicyclic Lactone Valence Isomers (Oxadiazabicyclo[2.1.0]pentanones), Formation of Carbodiimides, Reaction Mechanism, and Photochromism;Australian Journal of Chemistry;2014
4. Structures of 4-Iminopyrido[1,2-a]pyrimidines, Pyrido[1,2-a]pyrimidin-4-ones, Pyridopyrimidinium Olates, and Thiazolo[3,2-a]pyrimidine Analogues;Australian Journal of Chemistry;2012