cis-[Ru(2,2‘:6‘,2‘ ‘-terpyridine)(DMSO)Cl2]: Useful Precursor for the Synthesis of Heteroleptic Terpyridine Complexes under Mild Conditions
- 15 June 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 43 (14) , 4262-4271
- https://doi.org/10.1021/ic049822d
Abstract
[RuII(terpy)(DMSO)Cl2] complexes were synthesized as a 5/1 mixture of cis and trans isomers, and their reactivities with CO and with substituted 2,2‘:6‘,2‘ ‘-terpyridine (terpy) moieties have been investigated. The structure of a trans isomer and its CO adduct have been unambiguously assigned by spectroscopy and X-ray diffraction. The [Ru(terpy)(terpy-Br)]2+ complex prepared either from the cis-[RuII(terpy)(DMSO)Cl2] or from the cis-[RuII(terpy-Br)(DMSO)Cl2] precursor appeared to be reactive in cross-coupling reactions promoted by low-valent palladium(0) and is an attractive target for the stepwise synthesis of polynuclear complexes bearing vacant coordination sites (terpy-Br for 4‘-bromo-2,2‘:6‘,2‘ ‘-terpyridine). Several bipyridine, phenanthroline, and bipyrimidine complexes were prepared this way and their optical and redox properties determined and discussed.Keywords
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