Topic
Nickel
About: Nickel is a research topic. Over the lifetime, 79308 publications have been published within this topic receiving 1210058 citations. The topic is also known as: Ni & element 28.
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TL;DR: Nickel(II) heterocyclic carbene complexes of the formula NiI2(carbene)2 have been prepared and fully characterized by both spectroscopic methods and single-crystal X-ray structure analysis as discussed by the authors.
157 citations
TL;DR: Nickelocene reacts with a rigid bisimidazolium salt to give cyclopentadiene and a biscarbene-bridged dinuclear nickel complex, which upon treatment with 4,4′-bipyridine and AgBF4 yields the CpNiII-cornered molecular rectangle [1](BF4)4.
157 citations
TL;DR: In this article, 2,6-bis(diphenylmethyl)-4-methylaniline was condensed onto acenaphthenequinone via an aminoalane intermediate and metalated using nickel(II) dibromide dimethoxyethane adduct to yield bis[(2,6dibenzhydryl-4methylimino) acenAPHthene]dibromo nickel (II), which was examined for high-temperature ethylene polymerization and proved to be thermally robust at temperatures as high as
Abstract: Sterically demanding 2,6-bis(diphenylmethyl)-4-methylaniline was condensed onto acenaphthenequinone via an aminoalane intermediate and metalated using nickel(II) dibromide dimethoxyethane adduct to yield bis[(2,6-dibenzhydryl-4-methylimino) acenaphthene]dibromo nickel(II). This α-diimine precatalyst was examined for high-temperature ethylene polymerization and proved to be thermally robust at temperatures as high as 90 °C, demonstrating enhanced activity as compared with related catalysts. Furthermore, the resultant polymers displayed increased melting transitions as compared with those produced using catalysts with identical N-aryl moieties appended to nonacenaphthenequinone-derived ligand backbones.
157 citations
TL;DR: In this article, the reaction mechanism of the oxidation of nickel in alkaline solutions has been studied by cyclic voltammetry and scanning electron micrography, and it was shown that the formation of a layer of nickel hydroxide depends on the surface treatment of the nickel electrode.
157 citations
TL;DR: In this article, the surface tension of liquid binary alloys of the Cu-Ni-Fe system is measured by using the oscillating drop technique, and the results agree well with predictions from theory and an analysis of the segregational behaviour is performed.
Abstract: The surface tension of liquid binary alloys of the Cu-Ni-Fe system is measured by using the oscillating drop technique. The samples are processed contactlessly in an electromagnetic levitation chamber and hence, considerably large undercooling can be achieved. The alloys and the pure elements copper, nickel, and iron are investigated at various temperatures above and below their melting points. In addition, the surface tensions are also investigated as a function of the concentrations at constant temperature. The values agree well with predictions from theory and an analysis of the segregational behaviour is performed.
156 citations