Synthesis,Crystal Structure and Gas Adsorption Properties of Metal-organic Supercontainer Based 2,6-Naphthalenedicarboxylate Linker

A new sulfonylcalixarene-based coordination container 1 was designed and synthesized from the self-assembly reaction of p-tert-butylsulfonylcalix[4]arene (TBSC),Co(II) ion,and 2,6-naphthalenedicarboxylic acid (NDC).It crystallizes in tetragonal system,space group I4/m with a=b=30.9119(19)A,c=43.565(3)A,V=41628(6)A³,D_c=0.731 g/cm³,M_r=9162.36,C₃₈₄H₃₄₈Co₂₄O₁₂₆S₂₄,Z=2,F(000)=9384,μ=0.566 mm^–1,the final GOOF=1.027,R=0.0987 and w R=0.2474 for 7240 observed reflections with I>2σ(I).Structural analyses indicate that 1 adopts an edge-directed octahedral geometry and consists of six TBSC-supported Co₄ tetranuclear units locating on the vertices and twelve NDC bridging ligands occupying the edges.The new compound exhibits outstanding performance for the C₂ hydrocarbons separation over CH₄.