The title compound,Cd5（BTC）4(H2O)8·6H2O（BTC=1,3,5-benzenetricarboxylate） was synthesized under mild conditions,and its crystal structure was determined by means of single crystal X-ray diffraction.The compound crystallizes in the monoclinic system and belongs to space group P21/c with a=1.022 6（2） nm, b=1.081 4（2） nm,c=2.987 6（6） nm,β=99.437（3） °,V=3.259 1（11） nm3,Z=2,Dc=1.645 g/cm3,Mr=807.23,μ=1.691 mm-1,F（000）=1 544,GOF=1.082,R=0.059 2,wR=0.187 7. Its structure revealed that Cd1 and Cd2 centers are firstly linked with BTC to form wave-like layers,and then the octahedral coordination geometries of Cd3 centers connect the neighboring above layers to construct the 3D framework of Cd5（BTC）4（H2O）8·6H2O having 'Z'-like shaped channels with the greatest dimensions about 2.6 nm viewed along the direction.
Compound [Co 3(BTC)(HBTC)(H 2BTC)(C 2H 4O 2) 3]·3(DMF)·6(H 3O) was synthesized under mild conditions and its crystal structure was determined by using single crystal X-ray diffraction. The crystal structure was solved by direct method and refined by full-matrix least-square method. The crystal is monoclinic and belongs to space group Cc with a=2.645 3(5) nm, b= 1.670 4(3) nm, c=1\^821 6(4) nm, β=128.16(3) °, V=6.329(2) nm 3, Z=2 , D c=20.200 Mg/m 3, M r= 1 314.744, μ=10.274 mm -1, F(000) =38 226, GOF=0.99, R=0.094 1, ωR=0.257 3.
