A solid-state NMR/theoretical study of the tautomerism of 4-substituted pyrazolinones was carried out in search of new desmotropes. Thus, the systematic exploration by 13C and 15N CPMAS NMR of a series of 4-acylpyrazolin-5-ones has allowed to determine their structure in the solid state and to find a new example of desmotropy that of 1-phenyl-4-acetyl-pyrazolinone. © 2008 Elsevier Inc. All rights reserved.Peer Reviewe

Alkorta, Ibon

Claramunt, Rosa M.