Hydrothermal synthesis, crystal structure and fluorescence property of dysprosium coordination polymer with diglycolic acid

作者：Zhang Yan Bin; Ju Yan Ling; Li Yan Qiu; Li Xia^*

来源：Chinese Journal of Inorganic Chemistry, 2007, 23(12): 2059-2064.

• dysprosium
• diglycolic acid
• coordination polymer
• crystal structure
• fluorescence

A new lanthanide coordination polymer {[Dy(2)(dga)(3)(H(2)O)(4)]center dot 2H(2)O}(n) was prepared by hydrothermal method with DyCl(3)center dot 6H(2)O and diglycolic acid (H(2)dga), and structurally characterized by single-crystal X-ray diffraction technique. The complex crystallizes in Orthorhombic system, C222(1) space group with a = 1.773 5 (11) nm, b = 0.875 2(6) nm, c=1.504 3(9) nm, V=2.335 0(3) nm(3), D(c)=2.359 Mg . m(-3), Z=4, mu=6.447 mm(-1), F(000) = 1584.0, R = 0.050 7, wR=0.1216. In the complex, there are two types of coordination environments for Dy(3+) ion. One Dy1 ion is nine-coordinated by three diglycolato groups via six carboxyl oxygen atoms and three ether oxygen atoms. The Dy1 ion is in a distorted monocapped square-antiprism coordination geometry. Whereas the other Dy2 ion is eight-coordinated and the coordination sphere around each Dy2 ion consists of four carboxyl oxygen atoms from four diglycolato ligands and four oxygen atoms from. four coordinated water molecules. The coordination polyhedron of Dy2 ion can be described as a distorted square-antiprism. Eight- and nine-coordinate Dy(3+) ions are linked by diglycolato ligands to form a 2D network structure. The fluorescence spectral of the complex in solid state at room temperature shows that the diglycolic acid is. suitable for the sensitization on the luminescence of Dy(3+) ion. CCDC: 660435.

• 出版日期2007-12
• 单位首都师范大学