摘要
A new one-dimensional （1-D） compound [Sm（PCA）3（H2O）2]n·6nH2O （1, HPCA=pyrazinecarboxylic acid） has been synthesized via hydrothermal reaction and structurally characterized by single-crystal X-ray diffraction. Compound 1 crystallizes in the Pbca space group of orthorhombic system with a=19.465（3）, b=12.034（4）, c=19.842（4） , V=4648（2）3, C15H25N6O14Sm, Mr=663.76, Dc=1.897 g/cm3, S=1.023, μ（MoKα）=2.610 mm-1, F（000）=2648, R=0.0239 and wR=0.0616. Compound 1 is characteristic of an infinite 1-D chain-like structure with the samarium atoms locating at an environment of a monocapped square antiprism. The [Sm（PCA）3（H2O）2]n chains and the lattice water molecules interconnect together through π-π interactions and hydrogen bonding interactions to yield a 3-D supramolecular framework. Photoluminescent investigation reveals that the title compound displays an emission in the greenish blue region.
A new one-dimensional （1-D） compound [Sm（PCA）3（H2O）2]n·6nH2O （1, HPCA=pyrazinecarboxylic acid） has been synthesized via hydrothermal reaction and structurally characterized by single-crystal X-ray diffraction. Compound 1 crystallizes in the Pbca space group of orthorhombic system with a=19.465（3）, b=12.034（4）, c=19.842（4） , V=4648（2）3, C15H25N6O14Sm, Mr=663.76, Dc=1.897 g/cm3, S=1.023, μ（MoKα）=2.610 mm-1, F（000）=2648, R=0.0239 and wR=0.0616. Compound 1 is characteristic of an infinite 1-D chain-like structure with the samarium atoms locating at an environment of a monocapped square antiprism. The [Sm（PCA）3（H2O）2]n chains and the lattice water molecules interconnect together through π-π interactions and hydrogen bonding interactions to yield a 3-D supramolecular framework. Photoluminescent investigation reveals that the title compound displays an emission in the greenish blue region.
基金
the financial support of the NSF of Jiangxi Province (200007GQH1685, 2008GQH0001)
