Cu(i), Ag(i), Ni(ii), Cr(iii) and Ir(i) complexes with tritopic N^imineC^NHCN^amine pincer ligands and catalytic ethylene oligomerization

Abstract

Potentially pincer-type tritopic NimineCNHCNamine ligands with a variable length of the spacer connecting Nimidazole to the amine donor are evaluated.

A two-dimensional metallosupramolecular framework design based on coordination crosslinking of helical oligoamide nanorods

“…Cu(I) is known to form stable complexes with 2-3 ligands, although higher coordination numbers are also possible. 13,44 Cu(0) is not common among copper complexes and hence not much is known about its preferred coordination geometries. By considering the available packing geometries for the nanorods, for the complex formed with histidine side chains as ligands the square planar coordination geometry is the most likely as it requires the least distortion of the core nanorods, allowing the formation of a two dimensional ordered structure with an array of metal cores (Fig.…”

Recent progress on NHC-stabilized early transition metal (group 3–7) complexes: Synthesis and applications

“…90 Tridentate pincer-type NimineCNHCNamine ligands were also coordinated to Cr(III). 91 The resulting Cr(III) complexes are Jenkins and coll. reported on the first examples of aziridination catalysis with a NHC chromium complex.…”

Influence of the Flexibility of Nickel PCP‐Pincer Complexes on C−H and P−C Bond Activation and Ethylene Reactivity: A Combined Experimental and Theoretical Investigation

“…[19] The incorporation of NHCs into multidentate, hybrid ligands provides increased chemical diversity and can lead to particularly robust catalysts. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] Since their inception in the 1970s, pincer-type ligands, defined as any tridentate ligand that binds to a metal centre in a meridional fashion, have become ubiquitous in modern molecular chemistry, largely because of the kinetic and thermodynamic stabilization they confer to their metal complexes. Incorporating NHC donor(s) in pincer-type architectures has rapidly attracted considerable interest and the huge diversity and relatively easy functionalization of pincer ligands facilitates the fine-tuning of their stereoelectronic features and, consequently, of the reactivity and catalytic applications of their metal complexes.…”