Giant voids in the hydrothermally synthesized microporous square pyramidal-tetrahedral framework vanadium phosphates [HN(CH{sub 2}CH{sub 2}){sub 3}NH]K{sub 1.35}[V{sub 5}O{sub 9}(PO{sub 4}){sub 2}]{sm_bullet}xH{sub 2}O and Cs{sub 3}[V{sub 5}O{sub 9}(PO{sub 4}){sub 2}]{sm_bullet}xH{sub 2}O
- Syracuse Univ., NY (United States)
- NEC Research Institute, Princeton, NJ (United States); and others
The author presents a procedure for the low-temperature hydrothermal synthesis of a novel three-dimensional square pyramidal-tetrahedral framework vanadium phosphates [HN(CH{sub 2}CH{sub 2}){sub 3-}NH]K{sub 1.35}[V{sub 5}O{sub 9}(PO{sub 4}){sub 2}]{sm_bullet}xH{sub 2}O. These materials have extremely low framework densities and among the largest cavities observed in open-framework solid-state materials. The X-ray crystallography of these compounds is discussed. The large cavities are interconnected to one another in a diamond-like topology. Ion exchange and sorption properties of the phosphate hydrates are presented. 21 refs., 10 figs., 6 tabs.
- OSTI ID:
- 433467
- Journal Information:
- Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 1 Vol. 8; ISSN 0897-4756; ISSN CMATEX
- Country of Publication:
- United States
- Language:
- English
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