【摘要】 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Cu₂A₄（H₂O）₂ ,其中A=CH₂（?）CH—COO^- ,CH₂（?）C（CH₃）——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;C₂/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H₂O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.更多还原

【Abstract】 Two supramolecular complexes Cu2 A4(H2O)2[A = CH2 - CH - COO- and GH2 = C (CH3)-COO-] have been synthesized, and characterized by elemental analyses, IR, ESR and magnetic studies. The single crystal X - ray diffraction shows that Cu2(CH2= CH-COO)4(H2O)2 crystallizes in the monoclinic space group C2/ c , with a = 1 . 7009 ( 9 ) nm , b = 0 . 8060 ( 5 ) nm ,c = 1.4429(4)nm, β= 109.31(5)°, Z = 4 and R = 0.0501. Two copper( II ) atoms are bridged byfour acrylate groups. Each copper( II ) atom is coordinated with H2O molecule in axial position, forming a distorted square pyramidal configuration. The symmetric center is between the two copper( II ) atoms. The Cu-Cu bond distance is 0.26096(14)nm. The Cu-Cu distance and magnetic studies suggest that there exists an antiferromagnetic interaction between the two copper( II ) atoms. Two adjacent molecular units are linked by two hydrogen bonds (O...O = 0.2833nm), forming a one - dimensional chain supramolecular complex along c axis.更多还原