Straightforward Synthesis of Single-Crystalline and Redox-Active Cr(II)-carboxylate MOFs
摘要:
We report on a facile and environmentally friendly synthetic approach for single-crystalline chromium(II) carboxylate metal-organic frameworks (i.e., Cr-3(BTC)(2)center dot 3H(2)O (1) and Cr(hfipbb)center dot H2O (2) at room temperature in water. Both MOFs can be easily dehydrated, affording single-crystalline materials with open Cr(II) sites. In addition, the redox activity and porosity of the resulting Cr(II) MOFs were examined.
A Pd6 molecular cage [(tmen)Pd}6(bpy)3(tma)2](NO3)6 [1; where tmen = N,N,N′,N′-tetramethylethylene diamine, bpy = 4,4′-bipyridyl, and H3tma = trimesic acid] was prepared via the template-free three-component self-assembly of a cis-blocked palladium(II) acceptor in combination with a tricarboxylate and a dipyridyl donor. Complex 1 represents the first example of a 3D palladium(II) cage of defined shape