New types of the flexible self-assembled metal–organic coordination polymers constructed by aliphatic dicarboxylates and rigid bidentate nitrogen ligands
作者:Hongyan Mao、Changzheng Zhang、Gang Li、Hongyun Zhang、Hongwei Hou、Linke Li、Qingan Wu、Yu Zhu、Enbo Wang
DOI:10.1039/b410235e
日期:——
The reaction of metal ions, flexible aliphatic dicarboxylates and rigid bidentate linear ligands under mild conditions in water afford four novel metal-organic coordination polymers, [Cd(mu-mal)(mu-pyz)(0.5)(H(2)O)](n) 1 (mal = malonate dianion, pyz = pyrazine), [Cd(2)(mu-suc)(2)(mu-pyz)(H(2)O)(2)](n) 2 (suc = succinate dianion), and ([M(mu-bipy)(H(2)O)4][suc].4H(2)O)(n)(M = Co, 3, M = Zn, 4, bipy
金属离子,柔性脂族二羧酸盐和刚性双齿线性配体在温和的条件下在水中的反应提供了四种新型的金属-有机配位聚合物,[Cd(mu-mal)(mu-pyz)(0.5)(H(2)O) ](n)1(mal =丙二酸二价阴离子,pyz =吡嗪),[Cd(2)(mu-suc)(2)(mu-pyz)(H(2)O)(2)](n)2( suc =琥珀酸二阴离子)和([[M(mu-bipy)(H(2)O)4] [suc] .4H(2)O)(n)(M = Co,3,M = Zn,4, bipy = 4,4'-联吡啶)。1-4的分子结构已经通过单晶X射线晶体学确定。图1是3D网络,其由八面体配位的Cd原子层和层间的pyz分子组成,该层由丙二酸阴离子以顺-反构型桥接,由丙二酸根阴离子桥接。与1中的Cd原子不同,2中的每个Cd原子显示不常见的五边形-双锥体几何形状,以形成2D无限网格片,其正方形网格尺寸为ca。7.936 x