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H. Goldberg et al. / Journal of Molecular Catalysis A: Chemical 356 (2012) 152–157
added to a solution of sodium phosphate (709.8 mg, 5 mmol) in
10 mL water. A drop of H2SO4 was added and the solution was
stirred for 10 min at 70 ◦C then let cool to room temperature.
Sodium molybdate dihydrate (12.1 g, 50 mmol) dissolved in 20 mL
water was added. The color gradually changed from pale orange
to clear yellow. The solution was further acidified by adding 8 mL
HNO3 dropwise and the solution was let to stir at room tempera-
ture for 15 h. The desired H4PSbMo11O40 was extracted with diethyl
ether to yield an etherate phase; the ether was then removed by
evaporation. The crude mixture was dissolved in water and let
to crystallize to give yellowish crystals with a green tint. Yield –
2.6 g (27%). Elemental Analysis H4PSbMo11O40·14H2O experimen-
tal (calculated) P: 1.11 (1.47), Sb: 5.53 (5.79), Mo: 49.78 (50.15)
H2O: 12.07 (11.87).
Acknowledgement
This research was supported by the Israel Science Foundation
grant # 1073/10 and the Helen and Martin Kimmel Center for
Molecular Design. R. N. is the Rebecca and Israel Sieff Professor
of Chemistry and D. K. is Ramanujan Fellow of the Department of
Science and Technology (New Delhi, India).
Appendix A. Supplementary data
Supplementary data associated with this article can be found, in
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