The molybdenum and rhenium octahedral cluster chalcohalides in solid state chemistry: From condensed to discrete cluster units.
Résumé
A review is presented on the synthesis, crystal structure, and reactivity of the octahedral Mo6 and Re6 chalcohalides prepd. by solid state routes at high temp. Their crystal structures built from the face-capped M6L14 building blocks are presented according to the interunit connectivities, starting from the three-dimensional Chevrel phases and decreasing the dimensionality down to 2-dimensional, 1-dimensional and finally 0-dimensional compds. in which the cluster units are discrete. In a second step, the solid cluster compds. are relevant precursors for more recently expanded reactions in soln. or by soft chem., giving access to a large variety of hybrid org./inorg. cluster materials. [on SciFinder(R)]