丙烯酸类配体的配位化学和超分子化学

08-O-056
丙烯酸类配体的配位化学和超分子化学
刘贵磊，李 晖*
北京理工大学理学院化学系，北京100081
E-mail: liuhui@
丙烯酸是一类新型的羧酸配体。

此类配体的共同特征就是羧酸基团通过 C=C 双键与苯环形成了共轭体系，改变了配体分子的电荷密度分布。

为了深入研究固体状态下的氢键作用，我们选择了(E)-3-(2, 或 3, 或 4–羟基-苯基)-丙烯酸三种配体，研究了它们与过渡金属和镧系金属的配位聚合物。

通过元素分析，红外光谱及X-射线单晶体衍射测定了所有复合物的结构特点。

室温下，研究了配合物的固态光激发光性质。

得到了双核的配合物和选择性的一维链状的配位聚合物，所有的配合物通过晶格中的O—H···O氢键作用和π-π共轭作用形成了三维的超分子框架结构。

发现了由螺旋氢键组装形成的手性的配合物。

表明了丙烯酸的多配位模式和有趣的超分子化学。

关键词：丙烯酸；超分子化学；一维链；螺旋氢键
参考文献：[1] Hui Li, Chang-Wen Hu. Journal of Solid State Chemistry2004, 177，4501
COORDINATION CHEMISTRY AND SUPRAMOLECULAR
CHEMISTRY OF ACRYLIC ACID
Gui-Lei Liu, Hui Li*
Department of Chemistry, College of Science, Beijing Institute of Technology, No.5
South Street, Zhongguancun, 100081, Beijing
Abstract:Acrylic acids are new kinds of carboxylate ligand. The common feature in the structure of the ligands is the carboxylato group conjugated with benzene ring through C=C double bond, which make the electronic density delocalized in the ligand. In order to study the H-bonding interactions in the solid state, the hydroxyl group snbstituted derivates of acrylic acids, (E)-3-(2, or 3, or 4– hydroxyl - phenyl)- acrylic acid, have been chosen. We have studied the transition metal and lanthanide complexes with these acrylic ligands. All compounds were structurally characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction method. The solid photoluminescence of the complexes have also been investigated at room temperature. The dinuclear complexes and the alternative one-dimensional coordination polymers have been obtained.All the complexes form three-dimensional supramolecular framework by O-H…O hydrogen bonding and π-π interaction in the crystal lattices. The homochirality of the complexes constructed by homohelic H-bonding has been found. The results have shown the versatile coordination modes and interesting supramolecular chemistry of Acrylic acids.
Sponsored by the Natural Science Fund Council of China (20571011, 20771014).
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