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A series of new lanthanide hybrids [Ln3(mu-OH)4 (2,5-pydc)(2,5-Hpydc)3(H2O)4]n (Ln = Gd (1), Dy (2), Er (3), Eu (4), Sm (5), Yb (6), Y (7); 2,5-pydc=pyridine-2,5-dicarboxylate), as clustered lanthanide oxide ring tunnels with helical dodecahedral chains and fully 3D Ln-O-Ln connectivity, has been hydrothermally synthesized and characterized. The inorganic skeleton of the hybrid can be specified by the Schläfli symbol (6210)2 (64102) as a single 3D (3,4)-connected net. The luminescence properties have been studied, and the results showed that the Dy(III) (2) and Eu(III) (4) complexes exhibited sensitized luminescence in the visible region. Variable-temperature magnetic susceptibility measurements of 1-6 showed that the complexes 1-3 are nearly paramagnets, whereas the depopulation of the Stark levels in complexes 4-6 leads to a continuous decrease in mu(eff) when the sample is cooled from 300 to 2 K.

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The first organic-inorganic hybrid vanadoniobate cluster compounds with a bicapped Keggin-type {VNb(12)O(40)(VO)(2)} core have been synthesized and characterized.

One-pot mechanochemical synthesis was demonstrated to be an efficient strategy to synthesize host-guest POM⊂rho-ZIF complexes (POM = polyoxometalate; rho-ZIF = zeolitic imidazolate framework with rho topology) with high crystallinity. In this work, the metastable rho-ZIF with large interior cavities and windows was used as host matrix for encapsulating and immobilizing bulky guest molecules with high loading efficiency and chemical stability. As novel catalysts, POM⊂rho-ZIF complexes were found effective for the selective oxidation of a series of sulfides to sulfoxides. Moreover, the heterogeneity of these composite catalysts was confirmed by leaching tests, and they can be recycled at least four times without significant loss of activity.

Three novel coordination polymers, [Cu 2 (adip)(H 2 O) 4 ] n ‚nH 2 O (1), [Co 3 (Hadip) 2 (H 2 O) 6 ] n ‚2nH 2 O (2), and [Zn 7 (adip) 4 -(H 2 O) 10 K 2 (H 2 O) 2 ] n ‚4nH 2 O (3), were solvothermally synthesized by adopting a new type of multicarboxylate ligand, H 4 adip (H 4 adip) 5-aminodiacetic isophthalic acid). Compound 1 features a 1D tube-like structure, compound 2 shows novel 2D (3,4)-connected nets, and compound 3 possesses an interesting 3D architecture, all of which possess channels hosting guest water molecules. A particular interest of the adip 4ligand is its propensity to bind metal ions forming various metallocycles, which could be viewed as the basic building blocks in the construction of supramolecular frameworks. Thermogravimetric analyses (TGA) were performed on compounds 1, 2, and 3. Variable-temperature magnetic susceptibility of 2 was investigated. An intense blue luminescence with an emission band peaking at 454 nm observed for 3 may result from ligand-to-metal charge transfer (LMCT).

A highly stable radical photoinduced from a viologen-based coordination polymer exhibited a remarkable near-infrared photothermal effect with good recyclability.

Using two ligands, 4,6-bis(2-pyridyl)-2-aminopyrimidine (L1) with two N,N'-chelating sites and 4-(2-pyridyl)-6-(4-pyridyl)-2-aminopyrimidine (L2) (as the isomer of L1) containing one chelating site and one bridging unit, a series of novel Ag(I) complexes varying from zero- to two-dimensions have been prepared and their crystal structures determined via single-crystal X-ray diffraction. The two ligands are employed for the first time in coordination chemistry. The structures of compounds 1-3 are directed by the counteranions adopted in the reaction system: The reaction of L1 with AgNO3 yielded a dimer [Ag2L12](NO3)2 (1). The reaction of L1 with AgCF3SO3 led to a one-dimension "V-shaped" chain {[AgL1](CF3SO3)}n (2). When AgSCN was used, a one-dimension ladder {[Ag2L1(SCN)2].H2O}n (3) was obtained. While ligand L2 reacted with AgNO3, a two-dimension {[Ag2(L2)2](NO3)2.H2O}n (4) was prepared with the help of an argentophilic interaction. Compounds 1-4 display room-temperature photoluminescence.