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1H, 13C, 15N, 113Cd, 2D 15N1H and solid-state 13C CP/MAS NMR of Hg and Cd complexes of 4(1H)-quinazolinone-2,3-dihydro-2-thioxo

✍ Scribed by Francisco Javier Martínez-Martínez; Armando Ariza-Castolo; Victor Ramos-Nava; Norah Barba-Behrens; Rosalinda Contreras

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
323 KB
Volume
31
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The Cd(II) and Hg(II) complexes of 4(1H)‐quinazolinone‐2,3‐dihydro‐2‐thioxo (1) and the free ligand were studied by 1D and 2D multinuclear magnetic resonance in solution and ^13^C cross polarization magic angle spinning NMR in the solid state. Compound 1 adopts only one of five possible tautomeric structures in solution, namely the thiouracyl‐like structure. It was found that the metal atom is linked to two molecules of deprotonated 1 by N‐1 and coordinated by the sulphur atom. The compounds retain the same structure in the solid state and in dimethyl sulphoxide solution.

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