Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume 2022, Issue 36, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202200533
Keywords
Molybdate; Polyoxometalates; Preyssler-type phosphotungstate; Self-assembly; Substitution
Categories
Funding
- JSPS KAKENHI [JP21H02028, JP18H02058, JP22H05144]
- International Network on Polyoxometalate Science at Hiroshima University, JSPS Core-to-Core program
- Takahashi Industrial and Economic Research Foundation [12-003-147]
- Indonesia Endowment Fund for Education (LPDP), Ministry of Finance, Republic of Indonesia [PRJ-36/LPDP.3/2017]
- Spanish Government [PID2020-112762GB-I00]
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This study reports the synthesis of multi-Mo-substituted Preyssler-type phosphotungstates via hydrothermal reactions. The number of substituted Mo increases with the amount of Na2MoO4 in the reaction mixture, and the most suitable substitution position is the belt position.
We report the synthesis of multi-Mo-substituted Preyssler-type phosphotungstates, [P5W30-xMoxO110Na(H2O)](14-), with different amounts of incorporated Mo via the hydrothermal reactions of H3PO4, Na2WO4, and Na2MoO4; and characterization by P-31 nuclear magnetic resonance (NMR), Fourier-transform infrared (FT-IR), elemental analysis, electrospray ionization-mass spectrometry (ESI-MS), and cyclic voltammetry. The number of substituted Mo increases by increasing the amount of Na2MoO4 in the reaction mixture, and in the [P5W30-xMoxO110Na(H2O)](14-) up to penta-Mo-substituted species can be produced as mixtures of isomers with different Mo numbers and Mo positions. Single crystal X-ray structure analysis and density functional theory calculation indicate that the most suitable substitution position is the belt position.
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