Reactions of transition metal picrates with 4, 4'-bipyridine gave two complexes [Zn(4, 4'-bpy)~2(H~2O)~2](pic)~2·(4, 4'-bpy)·(H~2O) (1) and [Cu(4, 4'-bpy) (pic)~2] (2) (4, 4'-bpy=4, 4'-bipyridine, pic^ =picric anion), which were characterized by elemental analysis, IR spectroscopy and X-ray diffraction. Complex 1 crystallizes in the monoclinic space group C~c with cell parameters a=2.2716(2) nm, b=1. 6191(3) nm, c=1.6166(2) nm, β=131.085 (7)°, V=4.481(2) nm^3, Z=4. AN infinite 2-D network structure of the complex was constructed by coordination of zinc to 4, 4'-bpy. The most interesting feature is that the 2-D network is extended into 3-D network structures by uncoordinated 4, 4'-bpy via hydrogen bonds along the a axis. All the uncoordinated 4, 4'-bpy, picric anion and water molecles are clathrated in the network, exhibiting a certain inclusion phenomenon. Complex 2 crystallizes in the triclinic space group P1 with cell parameters a=0.6100(2) nm, b=1.0186 (3) nm, c=1.1046 (2) nm, α=107. 230(10)°, β=101.992(2)°, γ=97.87(7)°, V=0.6266 (3) nm^3, Z=1. In the complex, the coordination of copper cation to 4, 4'-bipyridine and picric anion simultaneously results in the infinite one dimensional 4, 4'-bpy-bridged polymeric [Cu(4, 4'-bpy) (pic)~2] chains.

Key words: BIPYRIDINE, CRYSTAL STRUCTURE, TRINITROPHENOL P, ZINC COMPLEX, COPPER COMPLEX, CLATHRATES, ELEMENTAL ANALYSIS, X-RAY DIFFRACTION ANALYSIS