Titanium(IV) terminal hydroxo complexes containing chelating bis(phosphine oxide) ligands

Treatment of [LOEtTi(OTf)3] (LOEt−=[CpCo{P(O)(OEt)2}3]-, OTf− = triflate) with S-binapO2 (binap = 2,2′-bis(diphenylphosphinoyl)-1,1′-binaphthyl) afforded the terminal hydroxo complex [LOEtTi(S-binapO2)(OH)][OTf]2 (1). Treatment of [LOEtTi(OTf)3] with K(tpip) (tpip− = [N(Ph2PO)2]−) afforded [LOEtTi(tpip)(OTf)][OTf] (2) that reacted with CsOH to give [LOEtTi(tpip)(OH)][OTf] (3). The structures of 1 and 2 have been determined.

Treatment of [LOEtTi(OTf)3] (LOEt−=[CpCo{P(O)(OEt)2}3]-; OTf− = triflate) with (S)-(−)-2,2′-bis(diphenylphosphinoyl)-1,1′-binaphthyl (S-binapO2) afforded the Ti(IV) hydroxo complex [LOEtTi(S-binapO2)(OH)][OTf]2 (1). Treatment of [LOEtTi(OTf)3] with K(tpip) (tpip− = [N(Ph2PO)2]−) afforded [LOEtTi(tpip)(OTf)][OTf] (2) that reacted with CsOH to give [LOEtTi(tpip)(OH)][OTf] (3). The crystal structures of 1 and 2 have been determined.Figure optionsDownload as PowerPoint slide