Author(s)

Zhaoyan Deng, Fengying Bai, Yongheng Xing, Na Xing, Liting Xu

College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, China.
College of Life Science, Liaoning Normal University, Dalian, China.

A series of lanthanide sulfates coordination complexes, Ln₂(SO₄)₃(H₂O)₈ (Ln = Pr (1), Nd (2), Tb (3), Sm (4), Dy (5), Gd (7), Ho (8)), and EuK(SO₄)₂ (6), were constructed by the reaction in situ of lanthanide ions (Ln³⁺) with flexible dodecanedioic acid and rigid aromatic 5-sulfosalicylic acid under hydrothermal conditions. All of them were characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. The crystal structures and coordination modes of metal centers and sulfate ions, as well as the novel reaction mechanism and different conditions of lanthanide ions and 5-sulfosalicylic acid to form the series of lanthanide sulfate complexes, were discussed in detail. Solid-state properties for these crystalline materials, such as thermal stability and powder X-ray diffraction have been investigated. Additionally, the photoluminescent characterizations of the complexes 3, 4, 5 and 6, and the catalytic properties of all the complexes about cyclohexane being oxidized into cyclohexanone/cyclohexanol were investigated and compared.

Lanthanide Sulfates; Hydrothermal Synthesis; Crystal Structure; Photoluminescent Properties; Catalytic Reaction

Deng, Z. , Bai, F. , Xing, Y. , Xing, N. and Xu, L. (2013) Reaction in situ found in the synthesis of a series of lanthanide sulfate complexes and investigation on their structure, spectra and catalytic activity. Open Journal of Inorganic Chemistry, 3, 76-99. doi: 10.4236/ojic.2013.34011.