Four examples of para-nitro substituted 2-(arylimino)pyridine-nickel(II) bromide complexes general formula, [2-{(2,6-R-4-NO2C6H2)N=CMe}C5H4N]NiBr2, but differentiable by the steric/electronic properties displayed ortho-groups [R = i-Pr (Ni1), Et (Ni2), CHPh2 (Ni3), CH(4-FPh)2 (Ni4)], have been prepared in good yield. For comparative purposes, meta-nitro complex, [2-{(2,6-i-Pr2-3-NO2-4-(4-FPh)2C...

Heterogeneous Ziegler-Natta and homogeneous metallocene catalysts exhibit greatly different active sitenature in olefin polymerization. In our previous study, it was reported that MgCl2-supported titanocenecatalysts can generate both Ziegler-Natta-type and metallocene-type active sites according to the type of activators.The dual active site nature of the supported titanocene catalysts was furt...

Abstract Tetranuclear Ga(III) complexes L 1–3 2 Ga 4 ( t ‐Bu) 8 1 – 3 are synthesized and characterized (elemental analysis, IR, H, 13 C, DOSY NMR spectroscopy, XRD) their activity in the ring‐opening polymerization (ROP) of lactide (LA) ϵ‐caprolactone ϵ ‐CL) is reported. Complex most active homopolymerization catalyst presence benzyl alcohol (BnOH), yielding isotactic‐enriched polylactides (PL...

Epoxy/dicarboxylic acid vitrimer was prepared by the solvent-free reaction of diglycidyl ether bisphenol A (DGEBA) and 1,4-cyclohexane dicarboxylic (CHDA) with addition monobutyltin oxide (Sn) as a catalyst. By tailoring catalyst content (?5 mol %), an effective conversion functional groups during cure demonstrated network polymerization mechanisms sequence side reactions. Indeed, manufactured ...

In this work, a novel dual-curing procedure has been developed. It is combination of first radical UV-initiated thiol-(meth)acrylate reaction, followed by second thermal thiol-epoxy step catalysed base. Since (meth)acrylates can lead to homopolymerization mechanism, the amount thiol be optimized reach cross-linked materials with Tgs above room temperature and good mechanical performance. should...