- [Cd(O2C(CH2)2CO2)]: An unprecedented 3D hybrid organic-inorganic topology
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The [Cd(O2C(CH2)2CO2)] has been hydrothermally prepared and structurally characterized using single-crystal X-ray diffraction. It crystallizes in the monoclinic system, S.G.: I 2/a, a=6.515(2) ?, b=4.889(3) ?, c=30.769(3) ?, β=94.34(8) ?. The structure exhibited alternating infinite chains of edge-sharing CdO6 octahedra which progress parallel to the a-axis and four corner-sharing CdO6 octahedra layers which progress in the (a,b) plane, pillared by succinate anion. The topology leads to intersecting hydrophobic channels along (1 1 0) and (1? 1 0) directions. The preparation, structural, thermal and infrared spectroscopic characterizations and 113Cd NMR (nuclear magnetic resonance) are presented.
- Seguatni,Smiri,Petit,Paris,Jouini
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- Seven-coordinated diaquasuccinatocadmium(II) bidimensional polymer: Crystal structure and vibrational and thermal behavior
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Diaquasuccinatocadmium(II) has been studied by single-crystal X-ray diffraction and FTIR and Raman spectroscopies at room temperature. The structure consists of seven-coordinated Cd atoms bridged by succinate ions to form two-dimensional polymers perpendicular to the b axis. Hydrogen bonds embracing one of the coordination water molecule and a carboxylate residue stabilize the three-dimensional structure. The spectroscopic data are consistent with the structural model. Thermal dehydration and decomposition processes have been also investigated using TG-DTA measurements, FTIR spectroscopy, and powder X-ray diffraction analysis. A phase transition of the amorphous anhydrous compound to a stable crystalline phase was observed at 262°C. (C) 2000 Academic Press.
- Brusau,Pedregosa,Narda,Echeverria,Punte
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