Synthesis, characterization, crystal structure and antitumor activities of a novel demethylcantharidato bridged copper(II) phenanthroline complex
作者:FuLing Yin、JingJing Zhu、Jian Hao、JingRong Cui、JunJiao Yang
DOI:10.1007/s11426-013-4865-1
日期:2013.4
A new polymeric demethylcantharidato (DCA) bridged copper(II) phenanthroline (phen) complex ([Cu(DCA)(phen)] n ·nH2O) has been synthesized and characterized by elemental analysis, IR and electronic spectra studies, molar conductivity measurement, and single crystal X-ray diffraction. The complex crystallizes in the orthorhombic space group Pbca with crystallographic data: a = 12.4537(4) Å, b = 9.3897(5) Å, c = 30.1264(10) Å, and Z = 8. In the crystal structure, the octahedral coordinated copper(II) ions are bridged by demethylcantharidate ligands into a one-dimensional zigzag-like structure with the Cu…Cu separation of 6.1719 Å, along with phen ligands attached to both sides of the chain alternatively. Interdigitation of the chelating phen ligands of two neighboring chains via hydrophobic interaction and van der Waals forces along ac plane forms two-dimensional polymeric bilayers with discrete water sandwich layer between the adjacent polymeric bilayers. The evaluation of the cytotoxic activity of the copper(II) complex against HCT-8 (colorectal carcinoma), A549 (pulmonary carcinoma), HeLa (cervical cancer), HepG2 (hepatocarcinoma), BGC-823 (gastric carcinoma), and MCF-7 (breast adenocarcinoma) cell lines revealed that it is a potent cytotoxic agent, superior to Na2DCA and phen against HeLa, HepG2 and BGC-823 cells.
一种新型聚合脱甲基斑蝥酸盐(DCA)桥联铜(II)菲啰啉(phen)络合物([Cu(DCA)(phen)] n·nH2O)已经合成,并通过元素分析、红外和电子光谱研究、摩尔电导率测量以及单晶X射线衍射进行了表征。该络合物在正交晶系Pbca中结晶,其晶体学数据为:a = 12.4537(4)Å,b = 9.3897(5)Å,c = 30.1264(10)Å,Z = 8。在晶体结构中,八面体配位铜(II)离子通过脱甲基斑蝥酸盐配体桥联成一维锯齿状结构,Cu…Cu间距为6.1719 Å,同时苯配体交替连接在链的两侧。通过疏水作用和范德华力,两个相邻链的螯合苯配体沿ac平面相互交错,形成二维聚合双分子层,相邻聚合双分子层之间存在离散的水夹层。对铜(II)络合物对HCT-8(结肠癌)、A549(肺癌)、HeLa(宫颈癌)、HepG2(肝癌)、BGC-823(胃癌)和MCF