A three-dimensional two-fold inorganic-organic hybrid complex:[Cd(C5H3O2)2(H2O)]n(1),was synthesized under mild hydrothermal condition,and the X-ray crystal structure analysis was used to determined the structure.The complex crystallizes in the orthorhombic space group Pbca,with a=1.147 6(2) nm,b=1.211 1(2) nm,c=1.750 3(4) nm,V=2.432 6(8) nm3,Z=8,R1=0.032 3,wR2=0.134 3.
The new polyoxomolybdate I was prepared from an aqueous solution by the reaction of Na2MoO4·H2O, NH2NH2·2HCl and HCOONa, and characterized by IR spectroscopy, elemental analysis and single-crystal X-ray structural analysis. Crystal data： C4H72ClMo18Na13O94, Mr= 3685.86, triclinic, space group PI, a = 11.922（5）, b = 15.003（5）, c = 15.171（5） A, a = 116.073（5）, β = 112.593（5）, γ = 93.342（5）°, V= 2164.3（14） A^3, Z = 1, Dc = 2.828 g/cm^3, F（000） = 1764, p = 2.741 mm^-4, R = 0.0349 and wR = 0.0875 （I 〉 20（I））. X-ray crystal structure analysis shows that 1 is constructed by Mo18 polyoxoanions linked by Na^＋ cations to form a fascinating 3D open framework with ＂guest＂ Na^＋ cations and fonnyl groups residing in the channels.
