Using bis-pyridyl-bis-amide ligands N,N′-bis-(4-pyridyl)phthalamide (L1), N,N′-bis-(4-pyridyl)iso -phthalamide (L2), hexanedioic acid bis-pyridin-4-ylamide (L3), and carboxylates, six metal(II) complexes formulated as Cd2(1,4-chdc)(L1)2·4H2O (1,4-H2chdc = 1,4-cyclohexanedicarboxylic acid) (1), Cd2(L1)2(in)4·3DMF (Hin = isonicotinic acid) (2), Zn(L1)(1,4-bdc) (1,4-H2bdc = 1,4-benzenedicarboxylic acid) (3), Cd(L2)(1,4-chdc) (4), Zn2(L2)2(tdc)2·DMF (H2tdc = thiophene-2,5-dicarboxylic acid) (5), and Zn(2,6-ndc)0.5(L3)0.5(SO4)·(CH3NHCH3) (2,6-H2ndc = 2,6-naphthalene- dicarboxylic acid) (6) have been hydro(solvo)thermally synthesized and structurally characterized by single-crystal X-ray diffraction. Complex 1 is a uninodal 6-connected noninterpenetrated three-dimensional (3D) network with {44.610.8}-mab topology, complex 2 exhibits a uninodal 6-connected 2-fold interpenetrated 3D framework with {412.63}-pcu topology, complex 3 shows a uninodal 8-fold interpenetrated 3D diamondoid framework, complexes 4 and 5 possess similar uninodal 2D layer with 44-sql topology, and complex 6 shows a framework of 2D → 3D inclined polycatenation based on 44-sql layer. The six complexes show different thermal stability and photoluminescence properties. The emission band of complex 1 becomes strong after dehydration, and water can reduce the emission intensities of the six complexes to some extents.

Co9S8@CoS@CoO@C nanoparticles with photoresponse exhibit excellent electrocatalytic activity for the oxygen evolution reaction with a lower overpotential than RuO2 and Pt.

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Based on the redox-active L (N,N'-bis-(4-pyridyl)phthalamide) ligand, two porous MOFs formulated as Zn(6)(BPC)(6)(L)(3)·9DMF (H(2)BPC = 4,4'-biphenyldicarboxylic acid) (1) and Cd(2)(TDC)(2)(L)(2)·4H(2)O (H(2)TDC = 2,5-thiophenedicarboxylic acid) (2) were synthesized and structurally characterized by single-crystal X-ray diffractions. Complex 1 features a uninodal 5-connected 3-fold interpenetrated 3D framework with {4(6).6(4)}-bnn hexagonal BN topology. Complex 2 displays a uninodal 6-connected 2-fold interpenetrated 3D framework with {4(12).6(3)}-pcu topology. When complexes 1 and 2 are used as supercapacitor electrode materials, they can provide a large voltage window as high as 2.6 V in an aqueous electrolyte, and their specific capacitances are much more than the value for the bare carbon glassy electrode. It is observed that the more the current density, the less the specific capacitance for the two kinds of supercapacitor electrode materials. The two complexes show different thermal stabilities, UV absorption and photoluminescence properties.

Ge-based hybrid perovskite materials have demonstrated great potential for second harmonic generation (SHG) due to the geometry and lone-pair induced non-centrosymmetric structures. Here, we report a new family of hybrid 3D Ge-based bromide perovskites AGeBr 3 , A = CH 3 NH 3 (MA), CH(NH 2 ) 2 (FA), Cs and FAGe 0.5 Sn 0.5 Br 3 , crystallizing in polar space groups. These compounds exhibit tunable SHG responses, where MAGeBr 3 shows the strongest SHG intensity (5 × potassium dihydrogen phosphate, KDP). Structural and theoretical analysis indicate the high SHG efficiency is attributed to the displacement of Ge 2 + along [111] direction and the relatively strong interactions between lone pair electrons of Ge 2 + and polar MA cations along the c-axis. This work provides new structural insights for designing and fine-tuning the SHG properties in hybrid metal halide materials.

Two octamolybdate-based MOFs with unsaturated coordinated metal centers formulated as Cu(3)(Mo(8)O(26))(H(2)O)(2)(OH)(2)(L1)(4) (L1 = 4H-4-amino-1,2,4-triazole) (1) and Ag(4)(Mo(8)O(26))(L2)(2.5)(H(2)O) (L2 = 3,5-dimethyl-4-amino-4H-1,2,4-triazole) (2) were synthesized and structurally characterized by single-crystal X-ray diffractions. Complex 1 exhibits a 1D chain-like structure. In complex 2, 1D Ag-octamolybdate chains in the ac plane are covalently embedded into the 2D Ag-L2 layer, and the Ag-octamolybdate chains in the bc plane covalently link the 2D layers into 3D architecture. The two complexes both exhibit electrocatalytic activities toward generating H(2) from water with lowered overpotentials and enhanced currents, and the Cu complex exhibits better electrocatalytic activity toward generating H(2) from water than the Ag complex.

Our explorations of novel inorganic solids with large birefringence in d10 Metal-Te4+-SO42- system afforded four new sulfate tellurites, Ga2(TeO3)(SO4)(OH)2, In2(TeO3)2(SO4)(H2O), Zn4(Te3O7)2(SO4)2(H2O) and Hg3(Te3O8)(SO4). Notably, Hg3(Te3O8)(SO4) exhibits the largest birefringence at...

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