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Nickel complexes, cations, with amines

Kusin s results were recently confirmed, by chance and unexpectedly. During studies on the nickel-amine catalyzed epimerization (see Osanai, this voL), calcium hydroxide plus amine was also tried [50] and proved successful. However, calcium cations do not form complexes with amines and when calcium hydroxide was tried without the amine, mannose was still formed from glucose but not fructose [51 ]. It was found that the reaction did not proceed through an ene-diol but by carbon-carbon bond migration within a calcium complex. [Pg.7]

The alleged preparation of the supposed cobalt(II) complex Na[Co(Et2dtc)3] described by D Ascenzo and Wendlandt (305) has been repeated by Holah and Murphy (306), who identified the product as [Co(Et2dtc)3]. Complexes of cobalt(III), nickel(II), and palladium(II) salts with cationic, dithiocarbamate ligands have been synthesized (307). Reaction of the secondary amine (Et2N(CH2)2)2NH with CS2 produces... [Pg.251]

Macrobicyclic cascade cryptands have also been prepared such as the series of bis(tren) derived (tren = tris(2-aminoethyl) amine, see Section 4.4.3) compounds 5.9. The di-nickel(II) and di-copper(II) complexes of the cages with various spacers all bind a metal cation into each tren unit. These metal... [Pg.324]

Hexamethylenetetramine forms both 1 1 and 2 1 complexes with nickel(n) iodide.64 Only the nitro-isomer of [NiL(N02)]BPh4,Me0H [L = Et2N(CH2)2-NH(CH2)2NEt2] has been isolated.464 The structure of [NiLCl]Cl [L = (78)] is square pyramidal with the four amine donors coplanar and the nickel slightly out of plane towards the apical chlorine. The ionic chloride is hydrogen-bonded to the cation... [Pg.273]

Amine-extraction equilibria can also be modeled by chemical-reaction equilibrium constants. Figure 8.3-3 indicates that cations such as iron(IIl), zinc, cobelt(ll) and coppeifU) exhibit high distribution coefficients with chloride solutions, wherese nickel. iron(II), and manganese are not extracted to any great extent. The besis for the differences in distribution coefficients lies mainly in the tendency for the former group of cations to fonn chloride complexes. Stability constants for these complexes are available in the literature,11 and they can be used to develop quantitative phase-equilibrium models. [Pg.485]

See other pages where Nickel complexes, cations, with amines is mentioned: [Pg.121]    [Pg.605]    [Pg.438]    [Pg.2124]    [Pg.42]    [Pg.208]    [Pg.231]    [Pg.322]    [Pg.605]    [Pg.594]    [Pg.352]    [Pg.282]    [Pg.548]    [Pg.311]    [Pg.287]    [Pg.333]    [Pg.233]    [Pg.198]    [Pg.563]    [Pg.318]    [Pg.136]    [Pg.178]    [Pg.132]    [Pg.573]    [Pg.478]    [Pg.333]    [Pg.105]    [Pg.107]   
See also in sourсe #XX -- [ Pg.11 , Pg.72 , Pg.73 , Pg.74 , Pg.75 , Pg.76 , Pg.77 , Pg.78 , Pg.79 , Pg.80 , Pg.81 ]

See also in sourсe #XX -- [ Pg.11 , Pg.72 , Pg.73 , Pg.74 , Pg.75 , Pg.76 , Pg.77 , Pg.78 , Pg.79 , Pg.80 , Pg.81 ]

See also in sourсe #XX -- [ Pg.11 , Pg.72 , Pg.73 , Pg.74 , Pg.75 , Pg.76 , Pg.77 , Pg.78 , Pg.79 , Pg.80 , Pg.81 ]



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Amines complex with

Amines complexes

Cations with

Nickel amine

Nickel complexes amines

Nickel complexes, cations, with

Nickel complexes, with

With nickel

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