Synthesis, Structure and Porous Properties of Prussian Blue Analogue Coordination Polymer KCd[Cr(CN)6]•H2O

A Prussian blue analogue coordination polymer, KCd[Cr(CN)(6)]center dot H2O (1 center dot H2O), has been synthesized based on Cd2+ and [Cr(CN)(6)](3-) as building blocks, which has been characterized by IR spectrum, elemental analysis, single crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis, and N-2 adsorption and desorption measurements. 1 center dot H2O belongs to cubic system with space group Fm-3m, and Cd2+ cell parameters: a=b=c=1.09059 mn, and alpha=beta=gamma=90 degrees. The structure of 1 center dot H2O consists of K+, Cd2+, [Cr(CN)(6)](3-) and one lattice water molecule, which forms a three-dimensional porous structure. Thermogravimetric analysis indicates that the framework of the dehydrated samples 1 is stable between 120 and 200 degrees C. N-2 adsorption and desorption studies suggest that the dehydrated samples 1 possesses surface area of 683.6.m(2).g(-1) and the maximum adsorption of 8.83 mmol.g(-1).