Synthesis, structural determination, and ethylene polymerization chemistry of mono(salicylaldiminato) complexes of titanium(IV)

New photocatalyst for allylic aliphatic C–H bond activation and degradation of organic pollutants: Schiff base Ti(iv) complexes

“…The XPS explains that Ti (IV) complexes give a significant information for complex formation through S, N and O atoms. These new absorption peaks are assigned to υ (Ti-S) stretching vibration modes for Ti(IV) complexes.The other prominent bands at 422, 416 and 412 in MPPT, DMPMPT and DCMPPT of Ti (IV) complexes, 35 respectively, have been consigned to υ(M-N) mode. The XPS spectrum of Ti 2p is unchanged with varying of ligands but very small change in S 2p peak position as compared with Ti(MPPT)O complex as shown in figure 2 due both donating and week withdrawing groups present in ligands of other two complexes.…”

“…These new absorption peaks are assigned to the v(Ti-S) stretching vibration modes for the Ti(IV) complexes. The other prominent bands at 422, 416 and 412 in MPPT, DMPMPT and DCMPPT of the Ti(IV) complexes, 35 respectively, have been consigned to the v(M-N) mode. For this reason, from the IR spectra it is established that MPPT, DMPMPT, and DCMPPT behave as tridentate ligands coordinated to the Ti ions via azomethine-N, pyridine-S and thiophenylic-S and a Ti-O band was also revealed.…”

“…A few studies on the electronic nature and structural properties of O]Ti porphyrins in water have been reported. 20 Ti(IV) complexes have been used for polymerization reactions, [21][22][23] but there are a few gaps found in the eld such as the degradation of dyes and C-H activation studies. 23 For this reason, Ti(IV) complexes are used towards the advancement of visible-light-sensitive photocatalysts.…”

Tridentate ligands and beyond in group IV metal α-olefin homo-/co-polymerization catalysis

“…However, no polymerization data were presented for these particular complexes. 34 A benzimidazolyl group can also be appended to a phenoxyimine-type framework, such as in the ligand IXH (Fig. 15).…”

(OC-6-22)-Bis{2-[1-(2-oxidoethylimino)ethyl]phenolato-κ3 O,N,O′}titanium(IV)

“…Over the past few decades, much attention has been focused on the chemistry of metal complexes with multidentate Schiff bases due to their ability to coordinate the majority of metal ions (Wilkinson et al, 1987;McCleverty & Meyer, 2004). Schiff base complexes of titanium have been investigated with respect to different aspects, for instance as chiral dopants for converting nematic into cholesteric phases (Braun et al 2005), as catalysts for the polymerization of ethylene (Owiny et al, 2003), or for enantioselective catalytic transformations (Braun et al, 2004;Yaozhong et al, 1995;Hayashi et al, 1994;Flores-Lopez et al, 2000). A small number of six-coordinate titanium complexes containing two O,N,O 0 -tridentate ligands of Schiff base type have already been structurally characterized (Fleischer, et al 1998;Rao et al, 1999Rao et al, , 2002Hu et al, 2001;Owiny et al, 2003;Flores-Lopez et al, 2000).…”