A humidity-controlled precipitation technique enabling discovery of Rb3(H1.5PO4)2
A humidity-controlled precipitation technique enabling discovery of Rb3(H1.5PO4)2
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湿度控制沉淀技术能够发现 Rb3(H1.5PO4)2
DOI:
10.1016/j.jssc.2020.121951
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发表时间:
2021
影响因子:
3.3
通讯作者:
Haile, Sossina M.
中科院分区:
文献类型:
--
作者:
Sanghvi, Sheel;Haile, Sossina M.
The previously unknown compound Rb3(H1.5PO4)2is successfully synthesized here using a newly developed variant of aqueous precipitation crystal growth. The approach exploits the phenomenon of boiling point elevation in concentrated solutions. Crystals of the title compound were obtained upon heating a stoichiometric solution from 110 to 150 °C under a high steam partial pressure of 0.83 atm. Single crystal X-ray diffraction studies revealed Rb3(H1.5PO4)2crystallizes in space groupC2/mand is isostructural to Cs3(H1.5PO4)2. As evidenced by thermal analysis, Rb3(H1.5PO4)2does not undergo a phase transition to a trigonal superprotonic phase upon heating. Even under a steam partial pressure of 0.82 atm, under which dehydration is suppressed to a temperature of 263 °C, no polymorphic transition is detected. The behavior parallels that of Cs3(H1.5PO4)2and contrasts that of several structurally and chemically similar selenate compounds. The crystal growth approach developed here may prove particularly useful for obtaining water soluble compounds which are thermodynamically or kinetically disfavored at temperatures close to ambient.
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DOI:
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发表时间:
1997
期刊:
影响因子:
--
作者:
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通讯作者:
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影响因子:
3.2
作者:
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通讯作者:
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DOI:
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发表时间:
2017
期刊:
Acta Crystallographica Section C Structural Chemistry
影响因子:
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1988
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发表时间:
1987
期刊:
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通讯作者:
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