Two alkaline earth metal coordination polymers [M（2-Hstp）（H2O）] （M = Ca2＋ （1） and Sr2＋ （2）, 2-H3stp = 2-sulfoterephthalate） were synthesized under hydrothermal conditions by the precursor [Mn（2-Hstp）2（...Two alkaline earth metal coordination polymers [M（2-Hstp）（H2O）] （M = Ca2＋ （1） and Sr2＋ （2）, 2-H3stp = 2-sulfoterephthalate） were synthesized under hydrothermal conditions by the precursor [Mn（2-Hstp）2（4,4？-Hbpy）2] and alkaline earth metal salts. The two alkaline earth complexes are not isomorphic. Complex 1 crystallizes in the monoclinic space group P21/m, while 2 in the monoclinic space group P21/c, despite of their similar formulas. In 1, the Ca2＋ ion lies in a seven-coordinated pentagon bipyramidal configuration, coordinated with five 2-Hstp2- anions and one water molecule. However, the Sr2＋ ion in 2 is coordinated by nine oxygen atoms to form a single-capped square antiprism polyhedron. Both 1 and 2 exhibit π-π＊ emission of the 2-sulfotere- phthalate ligand.展开更多
基金supported by the National Natural Science Foundation of China(No.21573189)the Undergraduate Training Programs of Innovation and Entrepreneurship of Shaanxi Province(No.1537)
文摘Two alkaline earth metal coordination polymers [M（2-Hstp）（H2O）] （M = Ca2＋ （1） and Sr2＋ （2）, 2-H3stp = 2-sulfoterephthalate） were synthesized under hydrothermal conditions by the precursor [Mn（2-Hstp）2（4,4？-Hbpy）2] and alkaline earth metal salts. The two alkaline earth complexes are not isomorphic. Complex 1 crystallizes in the monoclinic space group P21/m, while 2 in the monoclinic space group P21/c, despite of their similar formulas. In 1, the Ca2＋ ion lies in a seven-coordinated pentagon bipyramidal configuration, coordinated with five 2-Hstp2- anions and one water molecule. However, the Sr2＋ ion in 2 is coordinated by nine oxygen atoms to form a single-capped square antiprism polyhedron. Both 1 and 2 exhibit π-π＊ emission of the 2-sulfotere- phthalate ligand.
