Abstract
Two novel transition metal–organic frameworks, [Zn 6(OH) 3(BTC) 3(H 2O) 3]⋅7H 2O ( 1) and [Cd(BTC)(H 2O)]⋅[HIM] ( 2) (H 3BTC = 1,3,5-benzenetricarboxylic acid), have been synthesized under hydrothermal conditions and characterized by single crystal and variable temperature powder X-ray diffraction (VTPXRD), IR spectroscopy, elemental analyses, ICP measurements, and coupled TG–MS analyses. Compound 1 crystallizes in the trigonal space group R3 c, and could be described as a 3D porous network consisting of (Zn 2O 8) n zigzag chains and bridging BTC ligands with 1D channels along c axis. Compound 2 crystallizes in the monoclinic space group P2 1/ c, and exhibits a 2D framework made up of CdO 6 octahedra and BTC ligands parallel the bc plane. TG–MS and VTPXRD studies reveal that 1 is stable up to 320 °C under air, and 2 stable up to 220 °C.
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