Carbonic anhydrase-mimicking metal-organic frameworks built from amino acid and cadmium ions.

Built from L-histidine amino acid ligand and cadmium ions, two new 3D chiral metal-organic frameworks, [α-Cd(HIS)] (1) and [β-Cd(HIS)] (2), which contain metal-histidine bonds mimicking the structure features of carbonic anhydrase, demonstrate interesting properties of catalyzing the hydrolysis of -nitrophenylacetate (-NPA) to -nitrophenol (-NP).

M(bipyridine)V(4)O(10) (M = Cu, Ag): hybrid analogues of low-dimensional reduced vanadates.

New hybrid layered vanadates, M(bpy)V4O10 (I, M = Cu+; II, M = Ag+; bpy = 4,4'-bipyridine), were prepared from hydrothermal reactions at 220-230 degrees C, and their structures were characterized by single-crystal X-ray diffraction [I, P21/c (No. 14), Z = 4, a = 3.6154(3) A, b = 21.

Spin-gap formation and thermal structural studies in reduced hybrid layered vanadates.

Reduced layered M(C4H4N2)V4O10 ((I, M = Co; II, M = Ni; III, M = Zn); C4H4N2 = pyrazine, pyz) hybrid solids were synthesized via hydrothermal reactions at 200-230 degrees C, and their structures determined by single-crystal X-ray diffraction (Cmcm, No. 63, Z = 4; a = 14.311(2), 14.

Polar symmetry and intercalation of new multilayered hybrid molybdates: [M2(pzc)2(H2O)x][Mo5O16] (M = Co, Ni).

The layered molybdate [M2(pzc)2(H2O)x][Mo5O16] (I: M = Ni, x = 5.0; II: M = Co, x = 4.0; pzc = pyrazinecarboxylate) hybrid solids were synthesized via hydrothermal reactions at 160-165 degrees C.

Structural origin of chirality and properties of a remarkable helically pillared solid.

A new helically pillared and chiral solid, Cu(pzc)2AgReO4 (I, pzc = pyrazinecarboxylate), was synthesized from hydrothermal reactions at 95-125 degrees C. The structural origin of its chirality, relative to the achiral M(pzc)2(H2O)2AgReO4 (II, M = Co; III, M = Ni) analogues, arises from significantly tilted pillars and hydrogen bonds to the AgReO4 layers. The new pillared structure exhibits second harmonic generation activity, CO2 absorption, thermal stability to approximately 250 degrees C, and Curie-Weiss magnetism expected for isolated Cu2+.

Octahedral metal clusters as building units in a neutral layered honeycomb network, [Zn(en)]2[Nb6Cl12(CN)6].

A polymeric hybrid cluster-based compound with a double-layered honeycomb framework built of octahedral niobium cyanochloride clusters and [Zn(en)]2+ metal complexes was designed and synthesized at room temperature, and structurally characterized by single crystal X-ray diffraction.

Octahedral niobium chloride clusters as building blocks of templated prussian blue framework analogues.

The preparation, structure, and magnetic properties of the first three-dimensional framework containing octahedral niobium cyanochloride clusters as building units are reported. Reactions of aqueous solutions of (Me(4)N)(2)K(2)[Nb(6)Cl(12)(CN)(6)] (2) with aqueous solutions of MnCl(2) result in the precipitation of the compound (Me(4)N)(2)[MnNb(6)Cl(12)(CN)(6)] (3). The structure of 3 was determined from single-crystal X-ray diffraction study (crystal data: cubic, Fm3macrom(No.