阴离子主导的手性Cu(Ⅱ)配位聚合物:可逆的结构转换,圆二色谱和二次谐波响应

摘要

Two new chiral Cu(Ⅱ) coordination polymers,{[Cu((1R,2R)-3-bcpb)]Cl2}n (1) and {[Cu((1R,2R)-3-bcpb)2] (ClO4)2· 2H2O·2CH3OH}n (2) ((1R,2R)-3-bcpb=N,N'-((1R,2R)-cyclohexane-1,2-diyl)bis(N-(pyridin-3-ylmethyl)benzamide)),have been assembled with a chiral V-shaped bidentate ligand and different Cu(Ⅱ) salts,in which 1 is a 1D linear chain,while 2 displays a 2D (4,4) topology.1 can be directly transformed to 2 by the introduction of AgClO4,and 2 can also be directly converted to 1 by the addition of NaCl in methanol under solvothermal conditions.CD spectra and SHG response of the complexes confirm that their bulk samples are both of structural chirality.%用手性的V形双齿配体N,N'-((1R,2R)-1,2-二取代环己二胺)双(N-苯甲酸(3-吡啶亚甲基)酰胺(1R,2R)-3-bcpb)和不同的Cu(Ⅱ)盐反应,组装成2个新的手性Cu(Ⅱ)配位聚合物{[Cu((1R,2R)-3-bcpb)]Cl2｝n (1)和{[Cu(0R,2R)-3-bcpb)2](ClO4)2·2H2O· 2CH3OH｝n(2).其中1是一维链状结构,2具有二维(4,4)网络拓扑.溶剂热条件下,在甲醇溶剂体系中,通过引入AgClO4,1能转换成2,同时通过加入NaCl,2也能转换成1.圆二色谱和二次谐波响应测试验证了它们具有结构上的手性.