Lattice constants inorganic compounds

The crystal structure of ice is hexagonal, with lattice constants of a = 0.452 nm and c = 0.736 nm. The inorganic compound silver iodide also has a hexagonal structure, with lattice constants (a = 0.458 nm, c = 0.749 nm) that are almost identical to those of ice. So if you put a crystal of silver iodide into supercooled water, it is almost as good as putting in a crystal of ice more ice can grow on it easily, at a low undercooling (Fig. 9.2). 

Table 3-3, given on the next page, siunmarizes the various pairs of defects possible for binary compounds. Equilibria are given along with the appropriate equilibriiun constant. Note that these equations are rather simple and can be used to specify the equilibrium constants for these defects present in the lattice. These types of defects have been observed and studied in the compounds given under "Example in this Table. These are the major types of defects to be expected in most inorganic compounds, where the number of sites in the lattice is consteuit. 

The standard X-ray diffraction patterns for 57 compounds have been collected. The data comprise Miller indices, interplanar spacings, and lattice constants for inorganic compounds, solid solutions of alkali-metal halides and of alkaline-earth metal nitrates. ... 

When a compound crystallizes from solution, the crystals may contain solvent of crystallization. The compound is then called a solvate, and if the solvent is water, the compound is a hydrate. The presence of the solvent is revealed by elemental analysis, and thermogravimetric analysis (TGA) shows whether the solvent molecules are loosely or strongly bound in the crystal lattice. More generally, TGA is used to investigate the thermal degradation of inorganic compounds or polymers or the gas uptake of a solid (e.g. H2 uptake by WO3). A TGA instrument is able to simultaneously heat (at a constant rate) and record the mass of a sample. Samples are usually heated in air or N2, or in an... 

Crystal elastic constants, 12-33 to 38 Crystal ionic radii, 12-11 to 12 Crystal lattice energy, 12-19 to 31,12-32 Crystal optical properties elements, 12-121 to 145 inorganic compounds, 10-246 to 249 minerals, 4-149 to 155 various materials, 12-146 to 164 Crystal structure... 

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