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合成了铜(Ⅱ)与丙烯酸根和铜(Ⅱ)与α-甲基丙烯酸根形成的两种超分子配合物,进行了元素分析、红外光谱、ESR谱和磁性等研究,确定分子单元的组成为Cu_2A_4(H_2O)_2 ,其中A=CH_2(?)CH—COO~- ,CH_2(?)C(CH_3)——COO~-.测定了铜(Ⅱ)与丙烯酸根形成的配合物的晶体结构.晶体属单斜晶系;C_2/c群;晶胞参数:α=1.7009(9)nm,b=0.8060(5)nm,c=1.4429(4)nm,β=109.31(5)°,Z=4;最终偏离因子R=0.0501.Cu(Ⅱ)具有畸变的四角锥形配位环境,两个Cu(Ⅱ)由四个丙烯酸根桥联,在 Cu(Ⅱ)的端位各有一个H_2O分子配位.Cu(Ⅱ)-Cu(Ⅱ)间具有一对称中心,Cu—Cu间距离为0.26096(14)nm,两个Cu(Ⅱ)间具有反铁磁性偶合作用.每个分子单元以四根氢键与相邻的两个分子单元相连接,沿c轴形成一维链状超分子配合物.
Two supramolecular complexes of copper (Ⅱ) with acrylates, copper (Ⅱ) and α-methylacrylate were synthesized and studied by elemental analysis, infrared spectroscopy, ESR spectroscopy and magnetism to determine the composition of the molecular units The crystal structure of Cu (Ⅱ) complex with acrylic acid was determined as Cu_2A_4 (H_2O) _2, where A = CH_2 (CH) COOH and CH_2 (CH_3) . Crystals are monoclinic; C 2 / c group; unit cell parameters are α = 1.7009 (9) nm, b = 0.8060 (5) nm, c = 1.4429 = 4; the final deviation factor R = 0.0501.Cu (Ⅱ) has a distorted quadrangular conical coordination environment in which two Cu (Ⅱ) are bridged by four acrylates and one H 2 O at the end of Cu (Ⅱ) Cu (Ⅱ) -Cu (Ⅱ) has a symmetric center, the distance between Cu-Cu is 0.26096 (14) nm, and the two Cu (Ⅱ) have antiferromagnetic coupling. Four hydrogen bonds are connected with two adjacent molecular units, forming a one-dimensional chain supramolecular complex along the c-axis.