Double salt crystal structure of nona-sodium dihydrogen nona-vanadoplatinate(IV) tri-hydrogen nona-vanadoplatinate(IV) tetra-contahydrate: stepwise-protonated nona-vanadoplatinate(IV).

ABSTRACT: Nonavanadoplatinate [Pt(IV)V9O28](7-), which is the first heteropolyoxovanadate in the deca-vanadate framework, [V10O28](6-), has been investigated crystallographically. The title compound, Na9[H2Pt(IV)V9O28][H3Pt(IV)V9O28]·40H2O, was obtained by a hydro-thermal reaction at pH = 2. This compound contains two different protonated heteropolyoxovanadates, [H2Pt(IV)V9O28](5-) [polyanion (A)] and [H3Pt(IV)V9O28](7-) [polyanion (B)]. The locations of the H atoms on the protonated O atoms were observed in difference Fourier maps and confirmed by the inter-polyanion hydrogen bonds, bond-length elongation and bond-valence-sum (VBS) analysis. The two (Pt and V)-bound μ2-O atoms are protonated in both polyanions. The position of the third protonated O atom in polyanion (B) is an inter-esting feature

SUBMITTER: Joo HC 

PROVIDER: S-EPMC4518920 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature