Compressing aluminium sulfide to 2–65 kbar results in the δ phase where vacancies are arranged in a superlattice of tetragonal symmetry. Unlike Al 2 O 3, in which the Al(III) centers occupy octahedral holes, the more expanded framework of Al 2 S 3 stabilizes the Al(III) centers into one third of the tetrahedral holes of a hexagonally close-packed arrangement of the sulfide anions.
A slight stimulation mainly on the thymocytes was obtained with beryllium chloride, cadmium chloride, palladium chloride, platinum chloride and silver nitrate, at certain concentrations in the range of 10(-5)-10(-6)M, while ferric chloride gave a slight stimulation at 1.2 X 10(-3)M.
Boron triiodide is a chemical compound of boron and iodine with chemical formula BI 3. It has a trigonal planar molecular geometry. It is a crystalline solid, which reacts vigorously with water to form boric acid. Its dielectric constant is 5.38 and its heat of vaporization is 40.5 kJ/mol.
Iron(II) iodide is an inorganic compound with the chemical formula FeI 2. It is used as a catalyst in organic reactions. Reactions. Production of Iron(II)Hydroxide-Iodide: FeI 2 •4H 2 O -----> Fe(OH)I + HI + 3H 2 O. The thermal decomposition of tetrahydrate iron(II) iodide to produce iron(II) hydroxide-iodide, hydrogen iodide and water.
It is one of a number of iron oxides, the others being iron(II) oxide (FeO), which is rare, and iron(III) oxide (Fe 2 O 3) also known as hematite. It contains both Fe 2+ and Fe 3+ ions and is sometimes formulated as FeO ∙ Fe 2 O 3. This iron oxide is encountered in the laboratory as a black powder.