Crystal structure of heptaguanidinium nonahydrogen bis[a-hexamolybdoplatinate(IV)] heptahydrate

Hea Chung Joo, Ki Min Park, Uk Lee, S. Parkin

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The title compound, (CH6N3)7H9[PtMo6O24]2·7H2O, containing the well-known Anderson-type heteropolyoxomolybdate, was obtained by recrystallization of its powdered guanidinium salt. The protonated O atoms in the polyanion were confirmed by electron-density maps, interpolyanion hydrogen bonds and bond-valance sums (BVS). The {[H4.5PtMo6O24]2} polyanion is the same as that already characterized in K7[H4.5PtMo6O24]211H2O [space group P1; Lee & Joo (2010). Acta Cryst. E66, i8-i9]. The heteropolyanions form inversion-generated dimers, {[H45PtMo6O24]2}7-, held together by each of the four μ3-O - H⋯μ1-O, two μ2-O - H⋯μ2-O hydrogen bonds and one centrosymmetric μ3-O - H - μ3-O hydrogen bond. The H atom of the centrosymmetric hydrogen bond is located on an inversion centre. One guanidinium ion and one water molecule are equally disordered about a twofold rotation axis.

Original languageEnglish
Pages (from-to)268-271
Number of pages4
JournalActa Crystallographica Section E: Structure Reports Online
Issue number3
StatePublished - Mar 1 2015


  • Anderson-type heteropolyoxomolybdate
  • Centro-symmetric hydrogen bond
  • Crystal structure
  • Platinum-containing heteropolyoxomolybdate
  • Strong hydrogen bond

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics


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