Encapsulation of the vanadium substituted Keggin polyoxometalates [α-PVWO] and [α-PVWO] in HKUST-1.

Two POM@MOF hybrid materials composed of a copper-based metal-organic framework (MOF) [Cu(CHO)(HO)] (HKUST-1) encapsulating vanadium-substituted Keggin polyoxometalates (POM), [α-PVWO] () and [α-PVWO] (), were prepared and characterized. PVW@HKUST-1 and PVW@HKUST-1 were synthesized hydrothermally by self-assembly of HKUST-1 in the presence of the preformed POMs, [α-PVWO] and [α-PVWO], respectively. The two POM@MOF composites were characterized by X-ray diffraction, TGA, BET surface area analysis and FT-IR and Raman spectroscopy.

Organo-Functionalized Lacunary Double Cubane-Type Oxometallates: Synthesis, Structure, and Properties of [(M Cl) (V O) {((HOCH CH )(H)N(CH CH O))(HN(CH CH O) )} ] (M=Co, Zn).

Organofunctionalized tetranuclear clusters [(M Cl) (V O) {((HOCH CH )(H)N(CH CH O))(HN(CH CH O) )} ] (1, M=Co, 2: M=Zn) containing an unprecedented oxometallacyclic {M V Cl N O } (M=Co, Zn) framework have been prepared by solvothermal reactions. The new oxo-alkoxide compounds were fully characterized by spectroscopic methods, magnetic susceptibility measurement, DFT and ab initio computational methods, and complete single-crystal X-ray diffraction structure analysis. The isostructural clusters are formed of edge-sharing octahedral {VO N} and trigonal bipyramidal {MO NCl} units.