Study of a hydrothermal reaction system of copper, imidazole and polyoxometalates: selective assembly of a 3D porous metal–organic pseudo-rotaxane framework and encapsulation of polyoxometalate clusters†
Abstract
Three new compounds, [Cu(bimb)]2(HPW12O40)·3H2O (1), (H2bimb)2SiW12O40 (2) and (H2bimb)3CoW12O40 (3) (bimb = 1,4-bis(imidazol-1-ylmethyl)biphenyl), have been synthesized under the same hydrothermal conditions. Structural characterizations by