Metal–inorganic frameworks (MIFs) are a class of compounds consisting of metal ions or clusters coordinated to inorganic ligands to form one-, two-, or three-dimensional structures.
They are a subclass of coordination polymers, with the special feature that they are often porous.
[1] Millon's base which have been known since early 20th century, can be considered as MIFs.
[1] MIF with Borazocine linker was developed for hydrogen storage.
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