Two mixed-valence CuII/CuI and two heterometallic CuII/AgI metallocycles have been synthesized by the assembly of designed metalloligands and CuI/AgI ions, respectively.

A triangular prismatic metal–organic cage based on mixed valence copper ions has been designed and synthesized by using metallocycle panels and pillar ligands. The triangular prism will be quickly transformed to a 10-nuclear cage upon an external chemical stimulus, which features a bicapped square antiprism structure. This prismatic cage can act as a catalyst for oxidation of aromatic alcohols to their corresponding aromatic aldehydes with high yields at room temperature under O2 atmosphere.

Af amily of gyroidalm etal-organic frameworks (STUs) composited with transition metal ions and bi-imidazolate ligands (BIm) werep repared anda pplieda sb oth Lewis base and acid catalysts. Benefiting from the intrinsic basicity of the ligandsa nd the Lewis acidic sites of the open metal centres, the STUs materials show excellent catalytic activities as Lewis base for the Knoevenagel condensation reaction between variousa ldehydes and malononitrile, and as Lewis acid for cyanosilylation reactions. Among these STUs,S TU-4 (Ni(BIm)) shows the best catalytic efficiency (conversions > 99 %) in both Knoevenagel condensation and cyanosilylation reactions under mild conditions, providing thus an advancedm aterial for both Lewis base and Lewis acid catalysis.Figure 1. Structuralillustration of STUs and their Lewis basic and acid sites.

A unique metal–organic framework (MOF) with tetrazole-padded helical channels has been successfully synthesized in one pot from iron­(II) trifluoromethanesulfonate, 4-formylimidazole, hydrazine, and sodium azide under solvothermal conditions and features a rare unh topology and porous structure for gas adsorption. Transformations of condensation, cycloaddition, and coordination occurred during the synthetic process, in which a 1,5-disubstituted tetrazole ligand was formed in situ.

A family of gyroidal metal‐organic frameworks composited with transition‐metal ions and bi‐imidazolate ligands (BIm) was prepared and used as both Lewis base and acid catalysts. Benefiting from the intrinsic basicity of the ligands and the Lewis acidic sites of the open metal centers, the frameworks show excellent catalytic activities as Lewis base for the Knoevenagel condensation reaction between various aldehydes and malononitrile, and as Lewis acid for cyanosilylation reactions, providing advanced materials for both Lewis base and Lewis acid catalysis. More information can be found in the Full Paper by Xiao‐Ping Zhou, Tianfeng Chen, Dan Li et al. on page 3682 in Issue 20, 2019 (DOI: 10.1002/asia.201900853).