Reactions of Sodium N,N-Diethyldithiocarbamate and Potassium Ethyl Xanthate with some 3d Transition Metal Halides in the presence of 2,2′-Bipyridyl and 1,10-Phenanthroline

1971 ◽  
Vol 49 (16) ◽  
pp. 2726-2732 ◽  
Author(s):  
D. G. Holah ◽  
C. N. Murphy
Keyword(s):  
Transition Metal ◽  
Methylene Chloride ◽  
Cobalt Complexes ◽  
Divalent Metal ◽  
Metal Halides ◽  
Iron Cobalt ◽  
Nitrogen Bases ◽  
Ethyl Xanthate ◽  
Cobalt Nickel ◽  
Nickel Copper

The synthesis and some properties of ethylxanthate (Xan−) complexes, MXan2 and MXan3− (M = manganese(II) and iron(II)) are reported. Reactions between divalent metal halides (manganese, iron, cobalt, nickel, copper, and zinc) and Xan− and between the metal halides and N,N-diethyldithiocarbamate (dtc−) in the presence of nitrogen bases 1,10-phenanthroline (phen) and 2,2′-bipyridyl (bipy) are described. The major products of these reactions are complexes of the type MXan2.Base and Mdtc2.Base (with notable exceptions). In the former series with bipy, two different crystalline modifications of the manganese, iron, and cobalt complexes are formed, and copper(II) is reduced to copper(I) by Xan− in the presence of both bases. In the nickel–dtc system with bipy, Nidtc2 is produced, while with phen, the complex [Niphen3]dtc2 is formed. The latter reacts very rapidly with methylene chloride. Cudtc2 is produced from the copper(II)/base/dtc reactions.

scholarly journals Earth-Abundant 3d Transition Metal Catalysts for Hydroalkoxylation and Hydroamination of Unactivated Alkenes

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 674
Author(s):  
Lou Rocard ◽  
Donghuang Chen ◽  
Adrien Stadler ◽  
Hailong Zhang ◽  
Richard Gil ◽  
...  
Keyword(s):  
Transition Metal ◽  
Relevant Literature ◽  
Bond Formation ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Copper And Zinc ◽  
Nickel Copper ◽  
Earth Abundant

This review summarizes the most noteworthy achievements in the field of C–O and C–N bond formation by hydroalkoxylation and hydroamination reactions on unactivated alkenes (including 1,2- and 1,3-dienes) promoted by earth-abundant 3d transition metal catalysts based on manganese, iron, cobalt, nickel, copper and zinc. The relevant literature from 2012 until early 2021 has been covered.

THE STABILITY OF METALLIC COMPLEXES OF TWO DIMETHYLPHENANTHROLINES

1963 ◽  
Vol 41 (5) ◽  
pp. 1135-1141 ◽  
Author(s):  
D. A. Brisbin ◽  
W. A. E. Mcbryde
Keyword(s):  
Ionic Strength ◽  
Cobalt Complexes ◽  
Formation Constants ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Nickel Copper ◽  
Bivalent Iron ◽  
The Stability ◽  
Partition Method ◽  
Stepwise Formation

The stepwise formation constants for the complexes formed by 5,6-dimethyl- and 4,7-dimethyl-1,10-phenanthroline with bivalent iron, cobalt, nickel, copper, and zinc were determined by a partition method. The measurements were made at 25 °C and in aqueous solutions having an ionic strength maintained at 0.1. The enhanced basicity of the ligands compared to the parent phenanthroline is paralleled by increased stability of the metallic complexes. The abnormally high formation constants of the cobalt complexes suggest oxidation to cobalt (III).

scholarly journals On the Dissolution of Metals in Ionic Liquids 1. Iron, Cobalt, Nickel, Copper, and Zinc

2021 ◽  
Vol 2 (1) ◽  
pp. 63-73
Author(s):  
Jéssica D. S. Vicente ◽  
Domingas C. Miguel ◽  
Afonso M. P. Gonçalves ◽  
Diogo M. Cabrita ◽  
José M. Carretas ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Redox Potential ◽  
Final State ◽  
Iron Cobalt ◽  
Influence Of Temperature ◽  
Dissolution Reaction ◽  
Cobalt Nickel ◽  
Iron Metal ◽  
Copper And Zinc ◽  
Nickel Copper

Ionic liquids are critical reagents for science and technical processes nowadays. Metals are the most used reagents in the industry. It is crucial to have a deeper understanding of how ionic liquids and metals could interact. In this article the interaction of those two families of compounds is accessed. The dissolution (reaction) of metals with ionic liquids is studied, namely the influence of temperature, redox potential, and availability of an oxidant in the process. The final state achieved by the iron metal samples was also addressed by Mössbauer spectroscopy.

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