Ruthenium carbonyl complexes. iii* Preparations, properties and structures of dicarbonyl- and monocarbonyl-(2, 2′:6′, 2″-terpyridyl)ruthenium(ii) complexes

Glen B. Deacon, Jennifer M Patrick, Brian W. Skelton, Nicholas C. Thomas, Allan H. White

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Reaction of 2, 2′: 6′, 2″-terpyridyl (tpy) with ruthenium dicarbonyl dihalides yields the complexes Ru(CO)2X2(tpy) (X = Br or Cl), which can be protonated giving [RU(CO)2X2(tpyH)] ClO4. Crystal structures of the two forms (red and yellow) of Ru(Co)2Br2(tpy) show each to have octahedral stereochemistry with cis-carbonyls, trans-bromines, and bidentate tpy. Treatment of Ru(CO)2X2(tpy) complexes with trimethylamine N-oxide in dichloromethane at room temperature gives cis-Ru(CO)X2(tpy) complexes. The presence of cis halogens and tridentate terpyridyl in the chloro complex has been established by X-ray crystallography. Reaction of terpyridyl with ruthenium trichloride in dimethylformamide yields trans-Ru(CO)Cl2(tpy), the crystal structure of which has been determined.

Original languageEnglish
Pages (from-to)929-945
Number of pages17
JournalAustralian Journal of Chemistry
Issue number5
Publication statusPublished - 1984

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