Acta Cryst. (2003). E59, m116-m118  [ doi:10.1107/S160053680300360X ]

Anhydrous octaguanidinium hexatungstoplatinate(IV)

U. Lee, S.-J. Jang, H.-C. Joo and K.-M. Park

Abstract: Very stable crystals of the title compound, (CH₆N₃)₈[PtW₆O₂₄], containing the well known A-type Anderson-Evans heteropolyoxotungstate structure, were obtained by hydrothermal reaction. All O atoms in the polyanion form strong N-HO hydrogen bonds with all N atoms of the guanidinium ions. The [PtW₆O₂₄]^8- anion has S₆ () symmetry, with a Pt-O bond length of 2.016  (9)  Å, and three types of W-O bonds, with distances of 1.74  (1) and 1.78  (1)  (O_t), 1.95  (1)  (O_b), and 2.17  (1)  (O_c) Å.

Online 21 February 2003

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