Abstract When aiming at the direct use of CO2 for the preparation of advanced/value-added materials, the synthesis of CO2/olefin copolymers is very appealing but challenging. The δ-lactone 3-ethylidene-6-vinyltetrahydro-2H-pyran-2-one (EVP), synthesized by telomerization of CO2 with 1,3-butadiene,…
Summary Rigid terdentate ‘pincer' ligands containing a bridgehead N-heterocyclic carbene (NHC) donor attract considerable interest as spectators in transition metal complexes with broad scope and potential applications in the fields of catalysis, medicinal chemistry and material science. This…
Summary Pyridine Ring-Expanded dicarbene Pincer ligands were synthesized and some representative complexes with Ni and Cr show distinct geometrical and electronic characteristics from analogues with 5-membered ring heterocycles, opening new possibilities for pincer ligands featuring carbene…
Abstract Carbonylmetallates [m]−, such as [MoCp(CO)3]−, [Mn(CO)5]−, [Co(CO)4]−, have long been successfully used in the preparation of hundreds of metal-metal bonded carbonyl complexes and clusters, in particular of the heterometallic type. We focus here on situations where [m]− can be viewed as a…
Comprehensive Organometallic Chemistry IV (Fourth Edition) N-Heterocyclic Carbene Complexes of Nickel Volume 8, 2022, Pages 427-574 - DOI: https://doi.org/10.1016/B978-0-12-820206-7.00118-9 Ligielli Irene, Danopoulos Andreas A., Braunstein Pierre and Simler Thomas Abstract The impact of…
Comprehensive Organometallic Chemistry IV (Fourth Edition) N-Heterocyclic Carbene Complexes of Cobalt Volume 7, 2022, Pages 632-758- DOI: https://doi.org/10.1016/B978-0-12-820206-7.00109-8 Simler Thomas, Danopoulos Andreas A. and Braunstein Pierre Abstract N-heterocyclic carbenes (NHCs) have…
Abstract We report the first examples of metal-promoted double geminal activation of C(sp 3 )–H bonds of the N–CH 2 –N moiety in an imidazole-type heterocycle, leading to nickel and palladium NHC complexes under mild conditions. Reaction of the new electron-rich diphosphine 1,3-bis((di- tert…
Abstract A combined experimental/theoretical study of Ni pincer complexes with a bridgehead pyrimidine-based NHC and arylphosphino side arms revealed unique features about stepwise C–H activation, ethylene insertion into the Ni–H bond of an isolated complex followed by ethyl migration with C–CNHC…
Abstract The emergence of N-heterocyclic carbenes as ligands across the Periodic Table had an impact on various aspects of the coordination, organometallic, and catalytic chemistry of the 3d metals, including Cu, Ni, and Co, both from the fundamental viewpoint but also in applications, including…
