C–H bond chlorination using nickel(ii) complexes of tetradentate amido-quinoline ligands

Abstract

Ni(ii)-tetradentate amido-quinoline complexes effectively catalysed C–H chlorination of a series of hydrocarbons in the presence of NaOCl and acetic acid.

Synthesis, Characterization, and Reactivity of High-Valent Carbene Dicarboxamide-Based Nickel Pincer Complexes

“…EPR spectra of this formal high-valent Ni III species 4 in CH 2 Cl 2 exhibited a rhombic signal corresponding to a low-spin ( S = 1/2) d 7 Ni III complex with g avg = 2.159 (Figure b). The spectral features are very similar to the reported Ni III EPR spectra. ,,− The total yield of Ni III in the sample was calculated to be 85 ± 5% by comparison of the double integral of the entire signal to that of a (2,2,6,6-tetramethylpiperidin-1-yl)­oxyl (TEMPO) standard. The nature of the signal and the spin quantification results are consistent with the assignment of 4 as [(L 2 )­Ni III F].…”

Lattice variation as a function of concentration and grain size in MgO–NiO solid solution system

“…The lattice parameter of pure NiO at room temperature is 4.175 Å. Nano particles of nickel oxide (NiO) play a major role in myriad fields such as in: molecular biology and biotechnology [ 1 ], catalysis [ 2 ], battery cathodes [ 3 , 4 ], gas sensors [ 5 ], electrochromic films [ 6 ] and magnetic materials [ 7 , 8 ]. In addition, NiO x is also used in reactions of hydrogenation of nitriles and the hydrochlorination of aromatic compounds [ 9 , 10 ]. Moreover, NiO films with Mn and Zn doping have been fabricated successfully using a homemade chemical spray pyrolysis thin films deposition technique producing transparent conducting oxides emerging applicability of the films in optoelectronic applications [ 11 ].…”

An artificial nickel chlorinase based on the biotin–streptavidin technology

“…Drawing inspiration from natural chlorinases, chemists have developed several metal complexes that catalyze chlorination reactions. To cite a few, Mn-, 9 Fe- 10 and Ni-based 11 complexes have been reported to be efficient catalysts. Importantly, however, competition between the formation of chlorinated products and oxygenated side-products persists.…”