基于D(-)/L(+)-对羟基苯甘氨酸配体的两个铜配合物的合成、结构和电化学性质（英文）

Syntheses, Crystal Structures and Electrochemical Properties of Two Chiral Cu Complexes Based on D(-)/L(+)-4-Hydroxyphenylglycine

利用手性配体D(-)/L(+)-对羟基苯甘氨酸(D/L-Hhpg)与铜盐在溶液法条件下合成2个手性配合物{[Cu(D-hpg)(phen)(NO3)]·1.5H2O}n(1)和{[Cu(L-hpg)(phen)(NO3)]·2H2O}n(2),(phen=1,10-菲咯啉)。对2个配合物进行了元素分析、红外光谱、粉末X射线衍射、单晶X射线衍射、固态圆二色谱表征及热重-差热分析。配合物1和2是正交晶系,P212121手性空间群,二者均为1D链状结构并通过氢键作用形成3D超分子结构。有趣的是,配合物1和2中的配位硝酸根与晶格水分子之间的氢键作用使它们分别生成了沿b轴方向的左手和右手超分子螺旋链。此外,基于配合物1和2的中心金属离子为Cu(Ⅱ),进一步探究了电化学性能。循环伏安结果表明生成的配合物具有电化学活性,在扫描速率为0.025~1.0V·s^-1范围内,配合物制备的碳糊电极上的电化学过程是由表面控制的。

Two chiral coordination compounds based on D(-)/L(+)-4-hydroxyphenylglycine (D/L-Hhpg),{[Cu(D-hpg)(phen)(NO3)]·1.5H2O}n (1) and {[Cu(L-hpg)(phen)(NO3)]·2H2O}n (2)(phen=1,10-phenanthroline) have been syn-thesized and characterized by elemental analysis,infrared spectroscopy,powder X-ray diffraction,single-crystal X-ray diffraction,solid-state CD spectra and TG-DSC analysis.Compounds 1 and 2 are orthorhombic,P212121 chiral space groups.They are 1D chain structure,which is extended into a 3D supramolecular structure by the hydrogen bond.Interestingly,the compounds 1 and 2 exist left-handed or right-handed supramolecular helix chains along the b axis direction by the hydrogen bond respectively,which is extended by the hydrogen bond between coordinated nitrate anion and lattice water.Furthermore,based on the central metal ions of Cu(Ⅱ),further explored the compounds 1 and 2 of electrochemical properties,Analysis of cyclic voltammetry at varying scan rates (0.03 to 0.13 V·s^-1) demonstrates a linear relationship between the anode peak current and the scan rate,indicating a surface-controlled electrochemical process.CCDC: 1440300,1;1505353,2.