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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 11, Number 1
BKCSDE 11(1)
January 20, 1990 

 
Title
Structural Characterization of Crown Ether Complexed Potassium Ion (C12H24O6·K)2K[Co(OH)6Mo6O18]·12H2O
Author
Osamu Nagano, Uk Lee*, Hikaru Ichida, Yukiyoshi Sasaki
Keywords
Abstract
The crystal structure of (C12H24O6· K)2K[Co(OH)6Mo6O18]·12H2O has been determined by X-ray diffraction. Crystal data as follows ; monoclinic, space group C2/m, a = 22.512(4) Å, b = 18.304(4) Å, c = 7.641(1) Å, β = 90.52(2) Å, and Z = 2. A final conventional R value of 0.044 was obtained by least-squares refinement of 4173 independent observed [│Fo│≥ 3σ(│Fo│)] reflections. The [Co(OH)6Mo6O18]-3 polyanion shows the well-known Anderson-structure and has approximate 3m symmetry. A [Co(OH)6Mo6O18]-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.
Page
15 - 19
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