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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.
Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is an anion with chemical formula [{3,5-(CF 3) 2 C 6 H 3} 4 B] −, which is commonly abbreviated as [BAr F 4] −, indicating the presence of fluorinated aryl (Ar F) groups. It is sometimes referred to as Kobayashi's anion in honour of Hiroshi Kobayashi who led the team that first synthesised it. [1]
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: LiSC 6 H 5 + CuI → Cu(SC 6 H 5) + LiI. Lithium tert-butylthiolate reacts with MoCl 4 to give the tetrathiolate complex: [3] MoCl 4 + 4 t-BuSLi → Mo ...
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.
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 ...
Tributyltin azide is synthesized by the salt metathesis reaction of tributyltin chloride and sodium azide. It is a reagent used in the synthesis of tetrazoles, which in turn are used to generate angiotensin II receptor antagonists. In some applications, tributyltin azide has been replaced by the less toxic trioctyltin azide and organoaluminium ...
It is prepared from tetraethylammonium bromide by salt metathesis, using a hydroxide-loaded ion exchange column or by the action of silver oxide. [3] Attempted isolation of Et 4 NOH induces Hofmann elimination, leading to triethylamine and ethylene. Treatment of Et 4 NOH with a wide range of acids gives water and the other tetraethylammonium salts:
Like regular metallocenes, bent metallocenes are synthesized by a variety of methods but most typically by reaction of sodium cyclopentadienide with the metal halide. This method applies to the synthesis of the bent metallocene dihalides of titanium, zirconium, hafnium, and vanadium: