Functional nickel complexes of N-heterocyclic carbeneligands in pre-organized and supported thin film materials

Wang, Xinjiao; Sobota, Marek; Köhler, Florian; Morain, Bruno; Melcher, Berthold U.; Laurin, Mathias; Wasserscheid, Peter; Libuda, Jörg; Meyer, Karsten

doi:10.1039/c1jm13416g

Cited by 15 publications

(19 citation statements)

References 30 publications

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“…A large number of the benzimidazole, imidazole and the triazole based N-heterocyclic carbene complexes of the type (NHC) 2 NiX 2 (343−359), [122,126] (360), [127] (361−364), [128] (365−366), [122] (367), [129] (368), [50,129] (369−371), [129] (372), [130] (373), [127] (374), [131] (375), [132] (376−377), [133] (378), [134] (379), [135] (380), [136] (381−382), [86] (383−384), [137] (385−386), [138] (387−388), [124] (389−392), [110] (393), [139] (394), [47] (395−396), [140] (397−398) [141] and (399−400) [127] were conveniently synthesized by the direct method from the reaction of a free or an in situ generated NHC ligand with a Ni(II) precursor namely, Ni(OAc) 2 , bis-indenyl nickel (Ind) 2 In the third approach, the oxidation method has been used in the preparation of the (402), [125] (403−404), [143] (405), [144] (441) [32] and (446−447) [62] Additional notable examples of the oxidation method include a large number of complexes (367−368), [145] (406−409), [146] (410−411), [40] (412), [147] (413−416), [21] (417−420), [41] (421−422), [148] (423−...…”

Section: Neutral [(Nhc) 2 Nix 2 ] (X = Anion) Type Complexesmentioning

confidence: 99%

Nickel N-heterocyclic carbene complexes and their utility in homogeneous catalysis

Prakasham

Ghosh

2015

Inorganica Chimica Acta

117

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Section: Neutral [(Nhc) 2 Nix 2 ] (X = Anion) Type Complexesmentioning

confidence: 99%

Nickel N-heterocyclic carbene complexes and their utility in homogeneous catalysis

Prakasham

Ghosh

2015

Inorganica Chimica Acta

117

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“…In 2012, Wasserscheid et al described functional nickel complexes of N-heterocyclic carbene ligands in pre-organized and supported thin film materials. 184 The initial idea was to influence the selectivity of dimerization processes by manipulating the nickel catalyst in a highly ordered solvent environment. To realize the concept, the authors used pre-organized Ionic Liquid Crystals (ILCs), based on [C 12 C 12 Im][BF 4 ] in combination with Ni-catalyst complexes presenting NHC ligands with C 12 alkyl chains (Figure 38).…”

Section: Supported Ionic Liquidsmentioning

confidence: 99%

Nickel Catalyzed Olefin Oligomerization and Dimerization

et al. 2020

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Brought to life more than half a century ago and successfully applied for high-value petrochemical intermediates production, nickel-catalyzed olefin oligomerization is still a very dynamic topic, with many fundamental questions to address and industrial challenges to overcome. The unique and versatile reactivity of nickel enables the oligomerization of ethylene, propylene and butenes into a wide range of oligomers that are highly sought-after in numerous fields to be controlled. Interestingly, both homogeneous and heterogeneous nickel catalysts have been scrutinized and employed to do this. This rare specificity encouraged us to interlink them in this review so as to open up opportunities for further catalyst development and innovation. An in-depth understanding of the reaction mechanisms in play is essential to being able to fine-tune the selectivity and achieve efficiency in the rational design of novel catalytic systems. This review thus provides a complete overview of the subject, compiling the main fundamental/industrial milestones and remaining challenges facing homogeneous/heterogeneous approaches as well as emerging catalytic concepts, with a focus on the last 10 years.

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“…Another field of application, yet to be properly explored, is catalysis. For example, Wasserscheid and co-workers 290 demonstrated recently that ILCs containing dissolved metal complexes and supported silica (SILPs) have different activity from 'anisotropic' ionic liquids containing analogous complexes. It is probable, that chlorometallate SILPs 291 could display similar behaviour, but this area is yet to be explored.…”

Section: Soft and Composite Materialsmentioning

confidence: 99%

Halometallate ionic liquids – revisited

Estager¹,

2014

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Ionic liquids with chlorometallate anions may not have been the first ionic liquids, however, it was their development that lead to the recognition that ionic liquids are a distinct, and useful, class of (functional) materials. While much of the phenomenal interest and attention over the past two decades has focussed on 'air and water stable' ionic liquids, research and application of chlorometallate systems has continued unabated albeit largely out of the main spotlight. The defining characteristic of chlorometallates is the presence of complex anionic equilibria, which depend both on the type and on the concentration of metal present, and leads directly to their characteristic and individual properties. Here, we review the experimental techniques that can be applied to study and characterise the anion speciation in these ionic liquids and, using recent examples, illustrate how their applications base is evolving beyond traditional applications in Lewis acidic catalysis and electrochemistry through to uses as soft and component materials, in the ionothermal synthesis of semiconductors, gas storage systems and key components in the development of biomass processing.

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Functional nickel complexes of N-heterocyclic carbeneligands in pre-organized and supported thin film materials

Cited by 15 publications

References 30 publications

Nickel N-heterocyclic carbene complexes and their utility in homogeneous catalysis

Nickel N-heterocyclic carbene complexes and their utility in homogeneous catalysis

Nickel Catalyzed Olefin Oligomerization and Dimerization

Halometallate ionic liquids – revisited

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