摘要
通过液相扩散法合成了一个新的配位聚合物Cu(CBA)Py_2(H_2O)(CBA为4-(3'-羧丙酰胺基)苯甲酸阴离子,Py为吡啶),并对该化合物进行了元素分析、红外、热重、粉末X射线衍射表征,其结构由X射线单晶衍射确定。该化合物属于单斜晶系,空间群P2/c,晶胞参数:C_(21)H_(21)CuN_3O_6,a=2.15208(12)nm,b=0.57071(3)nm,c=1.72977(9)nm,α=90°,β=94.3200(10)°,γ=90°,R_1=0.0296,wR_2=0.0801。在该配合物中,柔性二羧酸配体4-(3'-羧丙酰胺基)苯甲酸阴离子桥联相邻的Cu(Ⅱ)离子形成一维链状结构,相邻链之间通过N-H…O和O-H…O氢键连接起来形成二维层状结构,层与层之间通过C-H…O氢键扩展成三维超分子结构。
A coordination polymer, Cu （CBA） PY2 （ HE O） （ CBA = 4-（3-carboxypropanamido） benzoic acid anion and Py = Pyridine ）, was synthesized by liquid/liquid diffusion method. The complex was characterized by elemental analysis, IR spectroscopy, TGA, powder X-ray diffraction and its structure was confirmed by single-crystal X-ray diffraction. The crystals belonged to the monoclinic system, space group P2/c. Crystal data：C21HE1CuN306, a =2. 15208（12） nm, b =0.57071 （3） nm, c = 1. 72977（9） nm, α=90°,β=94. 3200（10）°, γ=90°, R1 =0.0296, wR2 =0.0801. In the complex, the 4-（3- carboxypropanamido） benzoic acid anion bridged neighboring Cu （II） ions to form a one-dimensional chain structure. The neighboring chains were linked to form two-dimensional layers by N-H…O and O-H …O hydrogen bonds. The layers were finally extended into three-dimensional supramolecular architecture by C-H…O hydrogen bonds.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2016年第7期1875-1879,共5页
Journal of Synthetic Crystals
基金
国家级大学生创新创业训练计划基金(201310363079
201410363056)
关键词
配位聚合物
晶体结构
柔性二羧酸配体
coordination polymer
crystal structure
flexible dicarboxylate ligand
