Iodides mixed halides

Explosions sometimes resulted on opening sealed tubes in which complex mixed halide salts of this compound had been prepared. There is no obvious source of pressure in the reaction mixture of dipotassium tetradecachlorotungstate, lithium iodide and potassium iodide. 

In the method proposed by van Staden for the determination of three halides, these are separated in a short colunm packed with a strongly basic ion-exchange resin (Dowex i-X8) that is placed in an FI manifold. A laboratory-made tubular silver/silver halide ion-selective electrode is used as a potentiometric sensor. Van Staden compared the response capabilities of the halide-selective electrodes to a wide concentration range (20-5000 pg/mL) of individual and mixed halide solutions in the presence and absence of the ion-exchange column. By careful selection of appropriate concentrations of the potassixun nitrate carrier/eluent stream to satisfy the requirements of both the ion-exchange column and the halide-selective electrode, he succeeded in separating and determining chloride, bromide and iodide in mixed halide solutions with a detection limit of 5 /xg/mL [130]. 

Chloride, Bromide, Iodide and Mixed Halide Ligands... 

Chloride, bromide, iodide and mixed halide ligands 139... 

This technique has found limitations in the determination of bromide mixed halides, iodide, iodate, nitrite, nitrate, sulphide, sulphite, thiocyanate, thiosulphate and isobutyrate in non saline waters. 

Many polyhalides of alkali metals are known, the most important being the tri-iodides and the very stable mixed halides of the type MICl. Lithium... 

X), tetraethylammonium bromide, and tetraethylammonium iodide gives the mixed halide adducts XBro.23Io.46 and XBro.47lo.24- The tetracyclic compound (233) is produced by the action of triethyl phosphite on the dione... 

The molar volumes and liquid-gas phase compositions for the ZrCl -HfCl4 systems have also been studied (144). Nisel son (396) found that the binary systems of zirconium-hafnium chlorides, and bromides and iodides as well, have unlimited solubility in the liquid and solid states. The systems ZrCl4-ZrBr4 and ZrCl4-Zrl4 form a continuous series of solid solutions which contains a minimum. No mention is made of the possibility of mixed halide species. 

These complexes, which are readily synthesized by transmetalation see Transmetalation) from the appropriate Cp metal and MX4 (L = L ) or (jj -L)MX3 (L L ), represent a large family of quite always air-stable compounds. The bromides and iodides are also obtained from chlorine exchange reactions with the appropriate boron trihalide. The fluorides can be obtained by metathesis see Metathesis) of chlorides derivatives with MesSnF. With only one equivalent of tin reagent per mole of dichloride, partial fiuorination occurs affording mixed halide metallocenes. The fluorides are also prepared by chloride/fiuoride, by chloride/NMe2 followed by NMe2/fluoride exchange, and by oxidative addition see Oxidative Additioh). ... 

---