Coordination chemistry of new ruthenium and osmium dihydroxyquinoxaline complexes

Authors
Ramadan, RM Hamza, MSA Salem, AEM El-Zawawy, FM
Citation
Rm. Ramadan et al., Coordination chemistry of new ruthenium and osmium dihydroxyquinoxaline complexes, TRANSIT MET, 24(2), 1999, pp. 193-197
Citations number
27
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
TRANSITION METAL CHEMISTRY
ISSN journal
03404285 → ACNP
Volume
24
Issue
2
Year of publication
1999
Pages
193 - 197
Database
ISI
SICI code
0340-4285(199904)24:2<193:CCONRA>2.0.ZU;2-P
Abstract
Trinuclear clusters M-3(CO)(12) (M=Ru and Os) react with 2,3-dihydroxyquino xaline (DQ) to give M(CO)(2) (DQ) (DMSO) products. I.r. and n.m.r. spectros copy show these complexes are trigonal bipyramidal with the two CO molecule s differently bonded to the metal center; axially in the ruthenium complex and equatorially in the osmium complex. Prolonged heating of ruthenium(III) chloride with DQ gave the [Ru(DQ) (DMSO)(3)]Cl-3 complex, the i.r. spectru m of which showed that the ligand is bonded to the metal in the catecholate form.