Metal-chalcogenide frameworks, dimensional

Dimensional reduction has been set forth as a general method for dismantling noncluster metal-halide and -chalcogenide frameworks in a controlled, predictive manner (74). In such a reaction, a binary parent compound ML is heated with n equivalents of a dimensional reduction agent AJL, where A is significantly more electropositive than M. 

Solids with octahedral, tetrahedral, square planar, and linear metal coordination geometries, including many different types of polyhedra connectivity modes, are amenable to dimensional reduction. Tulsky and Long compiled an enormous database of over 300 different allowed combinations of M and X and over 10,000 combinations of A, M, and X. The formalism may be extendable to quaternary phases as well. However, frameworks containing anion-anion linkages, anions other than halides, oxide, or chalcogenides, nonstoichiometric phases, and mixed-valence compounds were excluded from their initial study. 

---