Misfit layer chalcogenides

Of special interest to intercalation studies are complex non-stoichiometric systems, such as the so-called misfit layer chalcogenides that were first synthesized in the 1960s [45]. Typically, the misfit compounds present an asymmetry along the c-axis, evidencing an inclination of the unit cell in this direction, due to lattice mismatch in, say, the -axis therefore these solids prefer to fold and/or adopt a hollow-fiber structure, crystallizing in either platelet form or as hollow whiskers. One of the first studied examples of such a misfit compound has been the kaolinite mineral. 

More recently, a new family of composite-layered chalcogenides with (MX)i f (TX2)2 stoichiometry (M = Sn, Pb, Bi T = Ti, Nb, Ta, X = S, Se) has been prepared and characterized. A common feature of these compounds is a misfit layer structure consisting of a double layer of MX and TX2 sandwiches along the c-axis. From the point of view of intercalation reactions, these hosts have the potential to separate the two adjacent TX2 slabs in order to accommodate new guest molecules. 

Misfit layered compounds are ternary chalcogenides of the general formula (AX)MX2 (A = Pb, Bi, Sn, or rare earth M = Cr, Nb, Ta, or V X = S or Se). This class of compounds has a unique structure composed of alternate stacking of... 

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See also in sourсe #XX -- [ ]

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