Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (2): 186-190 .

• Articles • Previous Articles     Next Articles

Synthesis, Structure and Characterization of Three Metal Molybdate Hydrates: Fe(H2O)2(MoO4)2·H3O, NaCo2(MoO4)2(H3O2) and Mn2(MoO4)3·2H3O

YU Yang, LIU Dan, HU Wei-wei, LI Jia, PENG Yu, ZHOU Qi, YANG Fen, LI Guang-hua, SHI Zhan, FENG Shou-hua   

  1. State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2011-03-01 Revised:2011-04-30 Online:2012-03-25 Published:2012-03-08
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.20971054, 90922034) and the Key Project of the Mi- nistry of Education of China(No.2009-49).

Abstract: Three metal molybdate hydrates, Fe(H2O)2(MoO4)2·H3O(FeMo), NaCo2(MoO4)2(H3O2)(CoMo) and Mn2(MoO4)3·2H3O(MnMo), were synthesized by the mixed-solvent-thermal methods and characterized by single- crystal X-ray diffraction. X-Ray photoelectron spectroscopy and bond-valence sums were applied to confirming the valance of Fe, Co, Mn and Mo. Thermo-gravimetric analysis and X-ray powder diffraction measurements indicate that the samples were converted to different structural compounds upon heating in air at 600 °C for 1 h. The magnetic properties of these compounds were studied. The dominant magnetic interactions are antiferromagnetic in nature. However, different synthesis conditions led to the diversity of magnetic properties of compound CoMo.

Key words: Mixed-solvent-thermal synthesis, Crystal structure, Transition metal molybdate, Magnetic property