ISSN:
1600-5767
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Geosciences
,
Physics
Notes:
The density, composition, X-ray powder data, unit-cell parameters, and stability fields are reported for five phases of the AgI–NH4I–H2O chemical system. The determinations were made by X-ray powder diffraction but with some aid from polarizing optical microscopy. Provisional cell assignments are: phase An (4AgI.NH4I) is cubic, phase Bn (3AgI.NH4I.6H2O) monoclinic, phase Cn (AgI.2NH4I) orthorhombic, phase E〈inf/〉n (AgI.2NH4I.H2O) orthorhombic, and phase Fn (2AgI.NH4I.2H2O) monoclinic. Upon combustion of an acetone solution of silver iodide and ammonium iodide, phase An forms and, when injected into the atmosphere, transforms to phases Fn or Bn as determined by the available moisture and temperature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0021889876010698
