Efficient ethylene polymerisation catalysis by a cationic benzyl hafnium complex containing pyrrolide-imine ligandsElectronic supplementary information (ESI) available: experimental and spectroscopic details. See http://www.rsc.org/suppdata/dt/b2/b209582c/

Well-defined vanadium complexes as the catalysts for olefin polymerization

“…Besides, iminopyrrolide ligands have been used in group 4 [73][74][75][76][77][78][79][80], group 6 [81], and group 10 metal systems [82,83] and have already been shown to afford highly active olefin (co)polymerizations. Different from mono(␤-enaminoketonato) vanadium(III) complexes and salicylaldiminato vanadium(III) complexes (Fig.…”

Pyrrolide-imine benzyl complexes of zirconium and hafnium: synthesis, structures, and efficient ethylene polymerization catalysis

“…In this article we describe the full details for the synthesis and structure of a series of dibenzyl hafnium and zirconium pyrrolide-imine complexes. The reactions of these complexes with B(C 6 F 5 ) 3 are examined along with the results of ethylene polymerization studies [24].…”

Water as an Ideal Solvent for the Synthesis of Easily Hydrolyzable Compounds: High‐Yield Preparation of 2‐Pyrrolecarbaldimines and their CVD/ALD‐Relevant Cu(II) Derivatives in H2O

“…Under similar conditions, however, 1j (R ¼ Ph) underwent reduction to produce a thin film of Cu metal at 160 -170 8C. Most unexpectedly, slow reduction to Cu metal was observed for 1a, b upon treatment with a 1 : 1 mixture of NH 3 and H 2 at 180 8C and above. Ammonia or H 2 alone were not as reactive.…”

“…The condensation of pyrrole-2-carboxaldehyde is commonly run in anhydrous alcohols such as EtOH [3,5,8] or dry ether [6,7] to minimize the reverse process, hydrolysis. Azeotropic distillation of the H 2 O byproduct has also been employed to maximize the yield.…”

“…Recent examples of exciting applications of 2-pyrrolecarbaldiminato complexes include efficient post-metallocene catalysis of ethylene polymerization with titanium [2] and hafnium [3] complexes, and facile C À H activation with platinum derivatives under mild conditions. [4] Most of the reported ligands of the type 2-pyrrolyl-CH ¼ NR are more stable derivatives of aromatic amines (R ¼ Ar), whereas much more easily hydrolyzable alkyl counterparts are scarce.…”