Hydrated metal salts

For the preparation of simple [MfO-I SOlnjCXl, salts (X = uncoordinated anion n, m = integer), the mixing of a hydrated metal salt with the appropriate sulfoxide is often sufficient. An appropriate solvent must be chosen, if this is considered necessary, as the solvent may... 

Preparative methods employed have been simple. Where coordinative saturation is desired the metal salt may be dissolved in DMSO and a non-polar solvent such as benzene added to induce crystallization of the product 9 commonly, a hydrated metal salt may be used without drying and gives the same product. It is also equally effective in many cases to dissolve the metal salt in acetone or ethanol and add an excess of ligand in the same solvent, concentrating the solution if necessary to obtain crystals this method is obviously more useful when it is undesirable or impracticable to use the neat ligand as a solvent, e.g. with Ph2SO. °... 

Table 2 Preparation of NMF Complexes Starting from 0.01 mol of Hydrated Metal Salts, using Triethyl Orthoformate (EOF) as Desiccant40... 

DMSO complexes can often be prepared simply by dissolving the appropriate metal salt in DMSO, and then precipitating the complex by adding a less polar solvent such as benzene. The hydrated metal salt can often be used in this process, although in the preparation of other dialkyl sulfoxide solvates it has been found that removal of water is necessary. 

All the compounds described in this contribution are sensitive to moisture. When in contact with water, they decompose—as has already been stressed above—yielding hydrated metal salts and/or hydroxides or oxides. 

Complete system (including R, F, the hydrated metal salt, and epichlorohydrin). 

Rapid oxidation of secondary alcohols may be carried out using hydrated copper permanganate in dichloromethane. Water is an essential component in the reaction. Mixtures of potassium permanganate and copper sulphate may also be used, as may a variety of hydrated metal salts, although in these cases experimental details and yields were not reported. Bispyridinesilver permanganate has been shown to be an efficient reagent, soluble in organic solvents, for the oxidation of benzylic primary amines and alcohols to benzaldehydes. The intermediacy of nitrite esters is implicated in oxidations of alcohols with ferric nitrate on KIO bentonite. ... 

Abbott et al (Abbott et al., 2004 Abbott et al., 2004 Abbott et al., 2004 Benaben Sottil, 2006) have reported several investigations regarding the formation of choline chloride based ionic liquids with various kinds of hydrated metallic salts, potentially able to be applied for electrodeposition and electropolishing. The involved metallic compounds have chlorides or nitrates as anions and the freezing point is up to 50°C. When other types of metallic salts have been employed, such as acetates, sulphates, the resulted ionic compound doesn t become solid at temperatures over 50C but the liquid state is maintained on a narrower domain. 

Abbott, A.P. Capper, G. Davies, D.L. Rasheed, R.K. (2004), Ionic liquid analogues formed from hydrated metal salts, Chem. Eur. ]., Vol.lO, No.l5, August 2004, pp. 3769-3774,lSSN1521-3765... 

Hydrated metal salt coating (Mg, Ki, Mn, Sn, Ti, Does not meet salt spray leqidremeM... 

The interaction between the metal ion and the water molecules is so strong that when the salt is crystallized from the solution, the water molecules crystallize along with the metal ion, forming the hydrated metal salt AICI3 6 H2O. In aqueous solution, the hydrated metal ions can act as Bronsted-Lowry acids. For instance, the hydrolysis of hydrated Al is given by... 

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