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Salt metathesis is a common technique for exchanging counterions. The choice of reactants is guided by a solubility chart or lattice energy. HSAB theory can also be used to predict the products of a metathesis reaction. Salt metathesis is often employed to obtain salts that are soluble in organic solvents.
Using salt metathesis reactions, nitrite, azide, and other small inorganic anions can be obtained with [(Ph 3 P) 2 N] + cations. The resulting salts [(Ph 3 P) 2 N] + NO − 2, [(Ph 3 P) 2 N] + N − 3, etc. are soluble in polar organic solvents. [(Ph 3 P) 2 N] + forms crystalline salts with a range of anions that are otherwise difficult to ...
The compound is prepared by the salt metathesis reaction of potassium iodide and potassium tetrachloroplatinate: [3] K 2 PtCl 4 + 4 KI → K 2 PtI 4 + 4 KCl Potassium tetraiodoplatinate is a precursor to the anticancer drug cisplatin .
Metal thiolate complexes are commonly prepared by reactions of metal complexes with thiols (RSH), thiolates (RS −), and disulfides (R 2 S 2). The salt metathesis reaction route is common. In this method, an alkali metal thiolate is treated with a transition metal halide to produce an alkali metal halide and the metal thiolate complex:
Rifampin rapidly kills fast-dividing bacilli strains as well as "persisters" cells, which remain biologically inactive for long periods of time that allow them to evade antibiotic activity. [7] In addition, rifabutin and rifapentine have both been used against tuberculosis acquired in HIV-positive patients.
In August 2020, the U.S. Food and Drug Administration (FDA) became aware of nitrosamine impurities in certain samples of rifampin. [61] The FDA and manufacturers are investigating the origin of these impurities in rifampin, and the agency is developing testing methods for regulators and industry to detect the 1-methyl-4-nitrosopiperazine (MNP ...
The halide salt is prepared by the reaction of triethylamine and an ethyl halide: + + This method works well for the preparation of tetraethylammonium iodide (where X = I). [1] Most tetraethylammonium salts are prepared by salt metathesis reactions.
The NO + [Al(Opftb) 4] − salt can be obtained in much higher yields than the analogous hfpp salt and can be used to oxidize several transition metal and main group element complexes. [ 9 ] [ 10 ] [ 11 ]