Journal
INORGANICA CHIMICA ACTA
Volume 455, Issue -, Pages 600-606Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2016.05.017
Keywords
Polyoxometalates; Keggin; Heteropolyacids; Pyridine derivatives; Solid-solid reaction; Mechanochemistry
Categories
Funding
- University of Aveiro
- CICECO
- FCT
- FEDER [POCTI/CTM/37713/2001]
- national funds through the FCT/MEC [POCI-01-0145-FEDER-007679, UID/CTM/50011/2013]
- FEDER
- Fundação para a Ciência e a Tecnologia [SFRH/SINTD/94891/2013, POCTI/CTM/37713/2001] Funding Source: FCT
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The synthesis of inorganic/organic hybrid compounds by solid-solid reactions of the hydrated wheteropolyacids H-3[PM12O40]center dot nH(2)O (M = Mo, W) with selected substituted pyridines having different sizes and functionalities is described. Several new compounds were prepared at room temperature and characterised by infrared and UV-Vis absorption spectroscopies, powder X-ray diffraction and analytical techniques. Related materials prepared by precipitation from solution were also studied and the comparison was made between results obtained with the different preparative procedures. This is the first systematic account on the acid-base reaction of solid heteropolyacids and solid pyridine derivatives, without the addition of any solvent. The obtained results indicate that the obtained crystalline powders may present physical properties different from related materials prepared by precipitation from solution. (C) 2016 Elsevier B.V. All rights reserved.
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