Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Unexpected oxidation of cis -1,3-dithiane-1,3-dioxide ( cis -DTSO 2 ) during the preparation of the uranyl nitrate complex

2003; Elsevier BV; Volume: 171; Issue: 1-2 Linguagem: Inglês

10.1016/s0022-4596(02)00155-x

1095-726X

Paulo B. Miranda, J. Zukerman‐Schpector, Marcelo Francis Máduar, L.B. Zinner, G. Vicentini,

Crystal structures of chemical compounds

During the preparation of the complex of hydrated uranyl nitrate with the ligand cis-DTSO 2 in ethanolic solution at 50°C, a molecule of the ligand suffered an unexpected oxidation giving rise to propanedisulfonate which acts both as bidentate ligand and as counterion. The uranium atom, the water molecule and the propanedisulfonate moiety are sited on a two-fold axis. The uranium atom is hepta-coordinated, in a pentagonal-bipyramidal fashion, to the uranyl oxygen atoms, one water molecule, two monodentate cis-DTSO 2 moieties and the bidentate propanedisulfonate. The water molecule is hydrogen bonded to the cis-DTSO 2 molecules. The supramolecular arrangement is made through a C-H...O interaction, giving rise to columns of complexes parallel to the b-axis.