Xanthate complexes, osmium

Pyridazines form complexes with iodine, iodine monochloride, bromine, nickel(II) ethyl xanthate, iron carbonyls, iron carbonyl and triphenylphosphine, boron trihalides, silver salts, mercury(I) salts, iridium and ruthenium salts, chromium carbonyl and transition metals, and pentammine complexes of osmium(II) and osmium(III) (79ACS(A)125). Pyridazine N- oxide and its methyl and phenyl substituted derivatives form copper complexes (78TL1979). 

As with earlier sections, there is a lack of structural data on binary xanthates for iron, ruthenium, and osmium, but there are a relatively large number of mixed-ligand complexes, particularly organometallic species. 

Osmium complexes, cis- and tnm -Os(S2COR)2(PPh3)2, have been prepared from Os(PPh3)2Br2 and potassium xanthates.228... 

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