Syntheses, structures, and catalytic properties of three Ni(II)-based coordination polymers from 2,4,6-tris(3-pyridyl)-1,3,5-benzene ligand

By tuning the solvothermal reaction conditions, we prepared three Ni(II)-based coordination polymers (CPs), namely [Ni(CH3-BDC)(3-TBT)(H2O)(2)]center dot EtOH center dot 2H(2)O (CP1), [Ni-3(CH3-BDC)(3)(3-TBT)(2)(H2O)(5)]center dot 2DMF center dot 2H(2)O (CP2), and [Ni-3(CH3-BDC)(3)(3-TBT)(2)(H2O)(6)]center dot 2DMF center dot 4H(2)O (CP3), where CH3-H2BDC=5-methyl isophthalic acid, 3-TBT=2,4,6-tris(3-pyridyl)-1,3,5-benzene. X-ray single crystal diffraction analyses reveal that three CPs are constructed from similar Ni-2(CH3-BDC)(2) binuclear units and exhibited different zero-dimensional (0D), 2D, and 3D networks, respectively. Meanwhile, the catalytic experiments show that CP3 exhibits the best catalytic activities and cycle stability for the oxidative coupling reaction of benzyl alcohol and its derivatives with aniline under solvent-free conditions.

Automated summary

By tuning the reaction conditions, three Ni(II)-based coordination polymers were synthesized, and one of them exhibited the best catalytic activity and cycle stability for the oxidative coupling reaction of benzyl alcohol and its derivatives with aniline under solvent-free conditions.