Dehydration of the nanoporous coordination framework Er-III[Co-III(CN)6]center dot 4(H2O): single crystal to single crystal transformation and negative thermal expansion in Er-III[Co-III(CN)6]

摘要

Desorption of bound and unbound water molecules from the nanoporous coordination framework Er-III[ Co-III( CN)(6)]center dot 4H(2)O to form the apohost, Er-III[ Co-III( CN)(6)], proceeds via a single crystal to single crystal transformation in which the Er( III) cations change from 8- to 6-coordinate; dehydration results in a striking change in the thermal expansion properties.