Xiao-Min Li

Two Compounds Constructed from Bimolybdenum-Capped Sandwich-Type Tetra-Ni-molybdogermanate and N-Donor Multidentate Ligand

Two organic-inorganic hybrid bimolybdenum-capped tetra-Ni(II) sandwich-type molybdogermanates, namely, (H2L)4[Ni4(H2O)2{B-α-GeMo9O34 (MoO2)}2]·6H2O (1), [Ni2(HL)4(H2O)2][Ni4(H2O)2{B-α-GeMo9O34(MoO2)}2]·12H2O (2), L = 2,4,5-tri(4-pyridyl)imidazole, were prepared with hydrothermal synthesis method and characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, thermogravimetric analysis, and single-crystal X-ray diffraction. Their magnetic properties and electrochemical properties were investigated. The results show that compounds 1 and 2 contain a new bimolybdenum-capped sandwich-type heteropolymolybdate anion, [Ni4(H2O)2{B-α-GeMo9O34(MoO2)}2](8-). The compound 1 is a zero-dimensional supramolecular compound, and the supramolecular architecture of compound 2 is constructed from covalent layers through hydrogen bonds and π-π interaction. The two compounds both present electrocatalytic activities for the reduction of nitrite.

A hybrid compound based on octamolybdates and a rigid multidentate ligand: synthesis, structure and characterization

[Cu8L8(β-Mo8O26)(γ-Mo8O26)]·3H2O, L = 2,4,5-tri(4-pyridyl)-imidazole, represents the first example with two types of 2D → 2D parallel interpenetration frameworks, one has the (β-Mo8O26)4− isomer, the other has the (γ-Mo8O26)4− isomer. Furthermore, the two 2D networks in one 2D → 2D parallel interpenetration framework are different, one is a CuL network, the other is a CuLMo8 network.