Synthesis,Crystal Structure and Antitumor Activity of a Na(Ⅰ) Coordination Polymer Based on 2-Propyl-4,5-imidazoledicarboxylic Acid and 1,10-Phenanthroline Ligands

A new Na(I) coordination polymer, [Na2(Hpimdc)(H2 pimdc)(phen)2]n(1), has been synthesized by the reaction of NaOH with 2-propyl-4,5-imidazoledicarboxylic acid(H3 pimdc)and 1,10-phenanthroline(phen). The Na(I) coordination polymer 1 was characterized by single-crystal X-ray diffraction analysis and elemental analysis. In 1, the bridged ligand H3 pimdc adopts two modes(singly deprotonated and doubly deprotonated) to coordinate with the Na(I) ion.The Na(1) ion is six-coordinated with three N atoms from a phen ligand and a H2 pimdc ligand,three O atoms from a Hpimdc ligand and two other different H2 pimdc ligands. The Na(2) ion is also six-coordinated with three N atoms from a phen ligand and a Hpimdc ligand, three O atoms from a H2 pimdc ligand and other two different Hpimdc ligands. Complex 1 exhibits a 1 D chain structure built up by μ-H2 pimdc-and μ-Hpimdc2-ligands. The antitumor activities of complex 1 against human SGC7901, A549 and H08910 cells have been tested.     

双活性中心催化剂的制备及催化合成炔丙基胺

以2,6-吡啶二甲酸和醋酸镍为原料,采用水热法合成了超分子配位聚合物Ni_2(2,6-NDC)2_(H_2O)_5·2H_2O(CP-Ni-NDC);然后分别以HAuCl_4和AgNO_3为前体,采用浸渍法制备了具有双活性中心的催化剂Au@CP-Ni-NDC和Ag@CP-Ni-NDC.采用X射线衍射、红外光谱、热重分析、透射电子显微镜、X射线光电子能谱、电感耦合等离子体原子发射光谱和NH_3程序升温脱附等方法对这2种催化剂进行表征,并考察了其在醛、炔和胺三组分偶联(A~3)反应合成炔丙基胺类化合物过程中的催化活性.实验结果表明,CP-Ni-NDC中的Ni与2,6-吡啶二甲酸络合形成了聚合物,层与层之间由氢键和π-π键作用形成三维超分子结构;催化剂4.49%Au@CP-Ni-NDC和3.43%Ag@CP-Ni-NDC存在路易斯酸-Au(或路易斯酸-Ag)双活性中心,有较高的催化合成炔丙基胺的活性,在120℃反应10 h,苯甲醛、苯乙炔和六氢吡啶发生A~3反应制备1-(1,3-二苯基-2-丙炔基)-哌啶的产率分别为63%和43%,转化数(Turnover number,TON)分别为9.9和4.8(基于总Au或总Ag含量).催化剂4.49%Au@CP-Ni-NDC和3.43%Ag@CP-Ni-NDC对于带有不同官能团的芳香醛和脂肪醛均具有较好的适应性,且可以重复使用4次.