2733-79-1Relevant articles and documents
Half-open ferrocenes and ruthenocenes containing an edge-bridged open indenyl ligand
Volbeda, Jeroen,Daniliuc, Constantin G.,Jones, Peter G.,Tamm, Matthias
, p. 5918 - 5925 (2013)
Potassium 1,1-dimethyl-1,2-dihydronaphthalenide, K(eboInd) (1), was synthesized in three steps from 4,4-dimethyl-1-tetralone and used for the synthesis of half-open metallocenes containing an edge-bridged open indenyl ligand (eboInd). Successive treatment of [(THF)FeI2] with Li(C 5Me5) and 1 at low temperatures afforded [(η5-C5Me5)Fe(η5-eboInd)] (2), whereas [(η5-C5Me5) Ru(η5-eboInd)] (3) was synthesized by reaction of 1 with [(C 5Me5)RuCl]4. Both compounds reacted with CO and 2,6-dimethylphenyl isocyanide (CN-o-Xy) to form [(η5-C 5Me5)M(η3-eboInd)L] (4: M = Fe, L = CO; 5: M = Ru, L = CO; 6: M = Fe, L = CN-o-Xy; 7: M = Ru, L = CN-o-Xy), in which the eboInd ligand has undergone an η5-to-η3 hapticity conversion. In contrast, the N-heterocyclic carbene 1,3,4,5- tetramethylimidazolin-2-ylidene (IMe) only reacted with the ruthenocene derivative 3 to give [(η5-C5Me5) Ru(η3-eboInd)(IMe)] (8). The molecular structures of 2-7 were determined by X-ray diffraction analysis. None of the iron-ruthenium pairs are isotypic.