Abstract
Trinuclear clusters M3(CO)12(M=Ru and Os) react with 2,3-dihydroxyquinoxaline (DQ) to give M(CO)2 (DQ) (DMSO) products. I.r. and n.m.r. spectroscopy show these complexes are trigonal bipyramidal with the two CO molecules 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]Cl3 complex, the i.r. spectrum of which showed that the ligand is bonded to the metal in the catecholate form.
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Ramadan, R.M., Hamza, M.S.A., Salem, A.EN.M. et al. Coordination chemistry of new ruthenium and osmium dihydroxyquinoxaline complexes. Transition Metal Chemistry 24, 193–197 (1999). https://doi.org/10.1023/A:1006925705978
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DOI: https://doi.org/10.1023/A:1006925705978