Benzene cyclopentadienyl ruthenium

Benzene cyclopentadienyl ruthenium(II) complex 125 undergoes nucleophilic addition at the arene ligand via the addition of sodium borohy-dride or phenyllithium. Reaction with phenyllithium gives the exo-phenyl cyclohexadienyl derivative 249 in 89% yield (154) [Eq. (32)]. 

RuO CjiHu, Ruthenium(II), (if-cyclopentadienyl) [2-[(diphenoxy-phosphino)oxy]phenyl-C, P] (triphen-ylphosphite-P)-, 26 178 RuPCji.Hjj, Ruthenium(II), [2-(diphenyl-phosphino)phenyl-C, P] (if-hexa-methyl-benzene)hydrido-, 26 182 Ru,C140,C24HJ4, Ruthenium(II), p-aqua-bis-(p.-chloroacetato)bis[(chloroacetato)... 

Photolysis of complex 125 (arene = benzene) in acetonitrile gives a quantitative yield of cyclopentadienyl tris(acetonitrile) ruthenium complex... 

Ruthenium is used as a catalyst, especially for reduction, oxidation and addition [17,66a,66b]. As organoruthenium compounds are reactive to a cyclopentadienyl ring or benzene ring, the formation reactions of these aromatic rings are liable to proceed. Cyclometalation as the other reaction is also liable to proceed. 

C3ftHi,ftB8NiP2, 3,7,9,1 3-Tetramethy 1-6-[bis(diphenylphosphino)ethane] 3,7,9,13-tetracarba-6 nickelatridecaborane, 46B, 822 C3ftHesFeNgTi2, Bis(tris(diethylamido)titano)ferrocene, 41B, 866 C3 5H18F9N2PRU, (Diphenyl(2-(r -cyclopentadienyl)phenyl)phosphine) (nonafluoro(phenylazo)phenyl-C(2),N )ruthenium, 42B, 638 C3 5H3iFe2NOgP, M DiphenylphosphidO M (iminium-ion)-bis(tricarbonyl-iron) benzene solvate, 44B, 722... 

Although benezene and benzene type complexes are much less common than those with cyclopentadienyl ligands, a number of such complexes are known for chromium and ruthenium. The bis benzene complex (// -C6H6)2Cr is photochemi-... 

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