Synthesis and characterization of ruthenium(II) complexes of 2 '-hydroxychalcones

Citation
Ams. Silva et al., Synthesis and characterization of ruthenium(II) complexes of 2 '-hydroxychalcones, NEW J CHEM, 23(3), 1999, pp. 329-335
Citations number
31
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
NEW JOURNAL OF CHEMISTRY
ISSN journal
1144-0546 → ACNP
Volume
23
Issue
3
Year of publication
1999
Pages
329 - 335
Database
ISI
SICI code
1144-0546(199903)23:3<329:SACORC>2.0.ZU;2-A
Abstract
Reaction of cis-RuCl2(DMSO)(4) with the potassium salts of 2'-hydroxychalco nes L leads to the stable complexes RuL2(DMSO)(2). For each ligand L three isomers of each bis(dimethyl sulfoxide)bis(chalconato)ruthenium(II) complex were found; in two of them the two chalconates and the two DMSO ligands ar e equivalent, while in the third one the chalconates and DMSO ligands are i nequivalent. Only two isomers of the RuL2(DMSO)(2) complex were obtained by the reaction of cis-RuCl2(DMSO)(4) with the potassium salt of the 2'-hydro xy-3,4,4',5,6'-pentamethoxydihydrochalcone. One of these isomers was also o btained by the reduction of the appropriate bis(dimethyl sulfoxide)bis(chal conato)ruthenium(II) complex. All these complexes were fully characterized by extensive NMR studies, mass spectrometry and elemental analysis. The une quivocal stereochemistry of each RuL2(DMSO)(2) complex was established by N OESY experiments.