THE OXYHALIDES OF THE III-B ELEMENTS.
Technical rept. Mar-Apr 68,
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
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The chemistry of the oxyhalides of boron, aluminum, gallium, indium, and thallium is reviewed. Topics include methods of preparation, thermal stabilities, crystal structures, and chemical reactivities toward six classes of reactants. Boron differs from the heavier III-B elements in that its oxyhalides, principally oxyfluorides and oxychlorides, are not stable under ordinary conditions. The boron oxyhalides can be studied only by physico-chemical methods that infer the existence and properties of gaseous molecules, which are stable only at high temperatures, or when kinetically trapped at very low temperatures after initial generation at high temperatures. In addition to crystalline oxyhalides that are stable at ordinary temperatures, a comparable chemistry of high-temperature molecules exists for the aluminum oxyhalides, but structural differences arise between such molecules and the boron oxyhalides. Author
- Inorganic Chemistry