摘要: A new 3d-4f (Cu^II-Ce^III) hetero-metallic compound containing two kinds of ligands, namely [Cu^II(H₂pdc)(phen)(H₂O)](H₃O)₂[Ce^III(pdc)₃][Cu^II(phen)Ce^III(pdc)₃] (1, H₂pdc=pyridine-2,6-dicarboxylic acid, phen=1,10-phenanthroline), has been synthesized by an ionothermal method using the ionic liquid 3-butyl-1-methylimidazolium bromide ([Bmim]Br) as solvent, and characterized by elemental analysis, energy-dispersive X-ray spectroscopy (EDS), IR, XPS and single-crystal X-ray diffraction. The structure reveals that 1 belongs to the triclinic system, space group P1 with a=12.044(7), b=14.841(8), c=22.305(13) Å, α=85.802(12), β=85.471(12), γ=89.174(11)°, Z=2, V=3964(4) ų, D_c=1.804 g·cm^-3, F(000)=2140, μ=1.757 mm^-1, the final R=0.0734, wR=0.1094 and S=1.013. The compound can be viewed as a two-dimensional layered structure composed by 3d-4f hetero-nuclear anions [Cu(phen)Ce(pdc)₃]^-, coordination cations [Cu(H₂pdc)(phen)(H₂O)]²⁺, coordination anions [Ce(pdc)₃]^3- and protonated water molecules via hydrogen bonding interactions and π-π stacking. Moreover, the antimicrobial activities of 1 have been also investigated. The results indicated that its inhibitory activity is slightly higher than that of penicillin against Candida albicans.