438454-86-5Relevant academic research and scientific papers
Nickel(II) complexes chelated by 2,6-pyridinedicarboxamide: Syntheses, characterization, and ethylene oligomerization
Zhang, Jie,Liu, Shaofeng,Li, Antai,Ye, Hongqi,Li, Zhibo
, p. 7027 - 7033 (2016/08/09)
N,N′-Bis(2,6-R-phenyl)-2,6-pyridinedicarboxamides (L: R = Cl, L1; R = F, L2; R = H, L3; R = Me, L4; R = Et, L5; R = iPr, L6) were designed as neutral ligands, and the corresponding nickel complexes LNiBr2 (Ni1-Ni6) were synthesized a
Synthesis of bis(N-arylcarboximidoylchloride)pyridine cobalt(ii) complexes and their catalytic behavior for 1,3-butadiene polymerization
Liu, Heng,Jia, Xiangyu,Wang, Feng,Dai, Quanquan,Wang, Baolin,Bi, Jifu,Zhang, Chunyu,Zhao, Liping,Bai, Chenxi,Hu, Yanming,Zhang, Xuequan
, p. 13723 - 13732 (2013/09/23)
A new family of bis(N-arylcarboximidoylchloride)pyridine cobalt(ii) complexes with the general formula [2,6-(ArNCCl)2C5H 3N]CoCl2 (Ar = 2,4,6-Me3C6H 2, 4a; 2,6-iPrsub
Reactions of the terminal NiII-OH group in substitution and electrophilic reactions with carbon dioxide and other substrates: Structural definition of binding modes in an intramolecular NiIIFeII bridged site
Huang, Deguang,Holm
experimental part, p. 4693 - 4701 (2010/06/18)
A singular feature of the catalytic C-cluster of carbon monoxide dehydrogenase is a sulfide-bridged NiFe locus where substrate is bound and transformed in the reversible reaction CO + H2O → CO2 + 2H+ + 2e-. A similar structure has been sought in this work. Mononuclear planar NiII complexes [Ni(pyN2 Me2)L]1- (pyN2Me2 = bis(2,6-dimethylphenyl)-2,6-pyridinedicarboxamidate(2-)) derived from a NNN pincer ligand have been prepared including L = OH- (1) and CN - (7). Complex 1 reacts with ethyl formate and CO2 to form unidentate L = HCO2- (5) and HCO3- (6) products. A binucleating macrocycle was prepared which specifically binds NiII at a NNN pincer site and five-coordinate FeII at a triamine site. The NiII macrocyle forms hydroxo (14) and cyanide complexes (15) analogous to 1 and 7. Reaction of 14 with FeCl2 alone and with ethyl formate and 15 with FeCl2 affords molecules with the NiII-L-FeII bridge unit in which L = μ2: η1-OH- (17) and μ2:η2- HCO2- (18) and -CN- (19). All bridges are nonlinear (17, 140.0°; 18, M-O-C 135.9° (Ni), 120.2° (Fe); 19, Ni-C-N 170.3°, Fe-N-C 141.8°) with NiFe separations of 3.7-4.8 A. The NiIIFeII complexes, lacking appropriate Ni-Fe-S cluster structures, are not site analogues, but their synthesis and reactivity provide the first demonstration that molecular NiIIFeII sites and bridges can be attained, a necessity in the biomimetic chemistry of C-clusters.
