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Synthesis of air-stable and high-performance single-molecule magnets (SMMs) is challenging. Here a heptadentate pentapyridyldiamine (BPA-TPA) ligand and fine-tuned axial phenoxy ligands are used to synthesize two triangular dodecahedral Dy(III) complexes...

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Under the background of epidemic prevention and control, 'residential economy' came into being, which puts forward more stringent requirements for the logistics system: considering the change of residents' online consumption before and after the epidemic, the load of the logistics system during the epidemic prevention is calculated. Under the priority guarantee of prevention and control requirements, the terminal logistics during the community blockade at the peak of epidemic situation should be reasonably handled. In this paper, the prevention and control requirements of public health events are included in the design considerations, and the development mode and technical means of the future community are integrated. A new non-contact terminal logistics processing mode and a logistics processing system based on big data are proposed to realize the orderly operation of logistics express under epidemic prevention and control, and become a powerful guarantee for the normal operation of society. Through reasonable calculation, the paper lays out cabinets and optimizes the form and site selection of express cabinets, which can not only solve the disordered problem of express logistics terminals within the community, but also meet the requirements of epidemic prevention and guarantee the transportation of materials in case of public health emergencies.