Unusual Reactions of Titanocene- and Zirconocene-Generating Complexes

Reactions of Titanocene- and Zirconocene-Bis(trimethylsilyl)acetylene Complexes with Selected Heterocyclic and Aromatic NH and OH Acid Compounds

“…In reactions of different titanocene and zirconocene complexes of bis(trimethylsilyl)acetylene Cp 2 M(L)(η 2 -Me 3 SiC 2 SiMe 3 ) (M = Ti, L = nil (1); M = Zr, L = THF (3)), and the pentamethylcyclopentadienyl complexes Cp* 2 M(η 2 -Me 3 SiC 2 SiMe 3 ) (M = Ti (2), Zr (4)) or the rac-ethylenebistetrahydroindenyl (ebthi) complex rac-(ebthi)M(η 2 -Me 3 SiC 2 SiMe 3 ) (M = Zr (5)), activation of several bonds was described in some reviews [1][2][3][4][5][6][7][8][9][10] . For example, cleavage of C-H, C-C (Cp-ring opening, cleavage of butadiynes), Si-C, P-C, N-H, N-C, N-N, Si-O, N-O, C-O, C-S, C-F and C-B bonds gave complexes of potential applicability in stoichiometric and catalytic reactions.…”

Crystal structure of bis(η5 -pentamethylcyclopentadienyl)(μ3-(oxymethylidin)- cyclo-(tricarbonylcobalt)(monocarbonylcobalt)-(μ2-η2-3-trimethylpropinyl)titan, C31H39Co2O5Ti

“…Some years ago we came to the question of heterobimetallics by investigating the C-C single bond cleavage reactions of 1,3-butadiynes as the basic for their C-C single bond metathesis. We could show that in some cases such a reaction is only possible by combinations like Ti-Ni or Zr-Ni [3,4]. Later we described Ti-Co compounds, obtained by N-N cleavage reaction of 2,3-diazadienes [5].…”

Crystal structure of bis(η5-cyclopentadienyl)-pyrrolide-titanium(III), Ti(C10H15)2(C4H4N)

“…The activation of several bonds in reactions of different titanocene and zirconocene complexes of bis(trimethylsilyl)acetylene was described in several reviews [1][2][3][4]. For example, cleavage of C-H,C-C,Si-C,N-H,N-C,N-N,N-O,C-O,C-F and C-Bbonds gave complexes of potential applicability in stoichiometrica nd catalyticr eactions.…”