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Structural Characterization of Crown Ether Complexed Potassium Ion $(C_{12}H_{24}O_6{\cdot}K)_2K[Co(OH)_6Mo_6O_{18}]{\cdot}12H_2O$

  • Osamu Nagano (Asahi Chemical Industry Co., Ltd.) ;
  • Uk Lee (Department of Applied Chemistry, National Fisheries University of Pusan) ;
  • Hikaru Ichida (Department of Chemistry, Faculty of Science, The University of Tokyo) ;
  • Yukiyoshi Sasaki (Department of Chemistry, Faculty of Science, The University of Tokyo)
  • Published : 1990.02.20

Abstract

The crystal structure of $(C_{12}H_{24}O_6{\cdot}K)_2K[Co(OH)_6Mo_6O_{18}]{\cdot}12H_2O$ has been determined by X-ray diffraction. Crystal data as follows ; monoclinic, space group $C_2/m,\;a\;=\;22.512(4)\;{\AA},\;b\;=\;18.304(4)\;{\AA},\;c\;=\;7.641(1)\;{\AA},\;{\beta}\;=\;90.52(2)\;{\AA}$, and Z = 2. A final conventional R value of 0.044 was obtained by least-squares refinement of 4173 independent observed $[{\mid}Fo{\mid}{\geq}3{\sigma}({\mid}Fo{\mid})]$ reflections. The $[Co(OH)_6Mo_6O_}{18}]^{-3}$ polyanion shows the well-known Anderson-structure and has approximate 3m symmetry. A $[Co(OH)_6Mo_6O_{18}]^{-3}$ polyanion is located between two crown ether complexed cations forming a sandwich structure. One potassium ion interacts with the crown ether via electrostatic interactions. The other potassium ion only interacts with the water molecules and terminal oxygen atoms of the polyanion.

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Cited by

  1. Synthesis and Crystal Structure of the Palladium(IV) Polyoxomolybdate, K0.75Na3.75[PdMo6O24H3.5]·17H2O vol.636, pp.5, 2010, https://doi.org/10.1002/zaac.200900129