Permanent porosity and role of sulfonate groups in coordination networks constructed from a new polyfunctional phosphonato-sulfonate linker molecule
作者:Stephan Wöhlbrandt、Angela Igeska、Erik Svensson Grape、Sigurd Øien-Ødegaard、A. Ken Inge、Norbert Stock
DOI:10.1039/c9dt04571f
日期:——
The new linker molecule (H2O3PCH2)2N-CH2C6H4SO3H, (4-[bis(phosphonomethyl)amino]methyl}benzene-sulfonic acid, H5L), bearing both phosphonic and sulfonic acid groups, was employed for the synthesis of new coordination polymers (CPs). Four new CPs of composition [Mg(H3L)(H2O)2]·H2O (1), [Mg2(HL)(H2O)6]·2H2O (2), [Ba(H3L)(H2O)]·H2O (3) and [Pb2(HL)]·H2O (4), were discovered using high-throughput methods
新的连接分子(H 2 O 3 PCH 2)2 N-CH 2 C 6 H 4 SO 3 H,(4-[双(膦酰基甲基)氨基]甲基}苯磺酸,H 5 L)膦酸和磺酸基团被用于合成新的配位聚合物(CP)。四个新的CP组成[Mg(H 3 L)(H 2 O)2 ]·H 2 O(1),[Mg 2(HL)(H 2 O)6 ]·2H 2 O(2),[Ba (高3 L)(高使用高通量方法发现了2 O)]·H 2 O( 3)和[Pb 2(HL)]·H 2 O( 4),并通过单晶X射线衍射(SCXRD)确定了所有结构。随着金属离子的离子半径的增加,观察到从CN = 6(Mg 2+)到CN = 9(Ba 2+)的配位数增加,并且网络的维数从1D增加到3D。这反映在IBU的组成和每个接头分子连接的金属离子的数量上,即从1比3变到4比10。IBU的连接导致1和2中的1D和2D结构带有不配位的磺酸盐基团,而3和4则在MO