Journal
INORGANIC CHEMISTRY
Volume 50, Issue 16, Pages 7811-7819Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic200969h
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Funding
- MEC of Spain [CTQ2008-06549-C02-01/BQU]
- Ramon y Cajal Program
- DGR of the Autonomous Government of Catalonia [2009SGR462, XRQTC]
- Royal Society of Edinburgh
- Marie Curie actions
- EPSRC
- Universitiy of Glasgow
- WestCHEM
- Leverhulme Trust
- Royal Society/Wolfson Foundation
- EPSRC [EP/C542819/1, EP/H024107/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H024107/1, EP/C542819/1] Funding Source: researchfish
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We investigate the assembly of small polyoxomolybdates using Car-Parrinello molecular dynamics simulations which show that there is an expansion of the coordination sphere of the Mo center from four to six in molybdate anions when the acidity of the solution is increased. With the help of complementary static density functional theory (DFT) calculations and electrospray ionization mass spectrometry experiments, we are able to postulate tentative mechanisms, with energy-cascade profiles, for the formation of the Lindqvist [Mo6O19](2)(-) anion. Similar to the family of isopolytungstates, it can be proposed that the [Mo6O19](2)(-) is formed by the aggregation of one molybdenum unit at a time; however, significant differences with respect to isopolytungstates are also found. The different behavior of chromates with respect to molybdates and tungstates is also considered.
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