氢键组装的异核金属超分子化合物(英文)

Hydrogen-bonding Assembled Heterometallic Supramolecular Compounds

以吡嗪2,3-二羧酸为配体制备得到了两个新型氢键组装的异核金属化合物{[Mg(H2O)6][Cu2(Pzdc)2]·4H2O}n(1)和{[Mg(H2O)6][Co2(HPzdc)6]}n(2)。单晶X射线衍射分析表明,化合物(1)为一维链状聚合物,化合物(2)则为独立分子。通过水分子、阳离子和阴离子间大量的氢键作用进而将化合物(1)和化合物(2)连接成为三维和二维的超分子化合物。另外,利用元素分析、红外光谱、粉末X射线衍射和热分析技术对化合物进行了表征。

Two new hydrogen-bonded heteometallic compounds formulated as {[Mg（H2O）6][Cu2（Pzdc）2]·4H2O}n （1）and {[Mg（H2O）6][Co2（HPzdc）6]}n （2）,have been synthesized （H2Pzdc=2,3-pyrazinedicarboxylic acid）.Single-crystal X-ray diffraction reveals that compound （1） is a 1-D chain polymer while compound （2） is a 0-D block.Both compounds are further linked into 3D and 2D supramolecular networks by extensive intermolecular hydrogen bonding interactions of water molecules,cationic and anionic moieties.Additionally,they were characterized by elemental analysis,IR spectrum,powder X-ray diffraction and thermogravimetric analysis.