Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - New synthetic route to monocarbonyl polypyridyl complexes of ruthenium
T2 - Their stereochemistry and reactivity
AU - Fletcher, Nicholas C.
AU - Keene, F. Richard
PY - 1998/7/21
Y1 - 1998/7/21
N2 - A new photochemical synthetic route to species of the type [Ru(terpy)(pp)(CO)]2+ has been elaborated [terpy = 2,2′:6′,2″-tetrapyridine; pp = a bidentate α,α′-diimine ligand such as 2,2′-bipyridine (bpy), 1,10-phenanthroline (phen), 4,4′-dimethyl-2,2′-bipyridine (dmbpy) or 4-(2-methylpropyl)-2,2′-bipyridine (mpbpy)]. For the species [Ru(terpy)(mpbpy)(CO)]2+ containing the new unsymmetrically substituted ligand (mpbpy) the two possible geometric isomers were separated by cation-exchange chromatography. The carbonyl groups can readily be removed and the vacant site substituted with pyridine, triphenylphosphine and chloride, with retention of the stereochemistry at the metal centre. By the correct choice of monodentate ligand at the sixth co-ordination site, the MLCT absorption maximum in the electronic spectra can be shifted by up to 150 nm, and the RuIII-RuII redox couple by over 1 V.
AB - A new photochemical synthetic route to species of the type [Ru(terpy)(pp)(CO)]2+ has been elaborated [terpy = 2,2′:6′,2″-tetrapyridine; pp = a bidentate α,α′-diimine ligand such as 2,2′-bipyridine (bpy), 1,10-phenanthroline (phen), 4,4′-dimethyl-2,2′-bipyridine (dmbpy) or 4-(2-methylpropyl)-2,2′-bipyridine (mpbpy)]. For the species [Ru(terpy)(mpbpy)(CO)]2+ containing the new unsymmetrically substituted ligand (mpbpy) the two possible geometric isomers were separated by cation-exchange chromatography. The carbonyl groups can readily be removed and the vacant site substituted with pyridine, triphenylphosphine and chloride, with retention of the stereochemistry at the metal centre. By the correct choice of monodentate ligand at the sixth co-ordination site, the MLCT absorption maximum in the electronic spectra can be shifted by up to 150 nm, and the RuIII-RuII redox couple by over 1 V.
U2 - 10.1039/a801780h
DO - 10.1039/a801780h
M3 - Journal article
AN - SCOPUS:33748457111
VL - 1998
SP - 2293
EP - 2301
JO - Journal of the Chemical Society - Dalton Transactions
JF - Journal of the Chemical Society - Dalton Transactions
SN - 0300-9246
IS - 14
ER -