Crystal Growth of New Hexahydroxometallates Using a Hydroflux
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https://figshare.com/articles/dataset/Crystal_Growth_of_New_Hexahydroxometallates_Using_a_Hydroflux/2364463
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资源简介：
A series of seven compounds, Sr2Mn(OH)6, Ba2Mn(OH)6, Sr2Co(OH)6, Ba2Co(OH)6, Sr2Ni(OH)6, Ba2Ni(OH)6, and
Ba2Cu(OH)6, were synthesized using a low-melting
hydroflux, a hybrid approach between aqueous hydrothermal and molten
hydroxide flux techniques. Crystals of the hexahydroxometallates were
obtained by dissolving appropriate amounts of alkaline-earth nitrates
or hydroxides and transition-metal oxides, acetates, or chlorides
in the hydroflux and reacting at 180–230 °C. The isostructural
compounds all crystallize in the monoclinic space group P21/n. The monoclinic structure consists
of isolated transition-metal octahedra within a three-dimensional
framework of corner- and edge-shared eight-coordinate, alkaline-earth
polyhedra. Magnetic susceptibility data show that all compounds are
simple paramagnets. Thermogravimetric analysis indicates that these
hydroxides lose water between 215 and 350 °C and transform into
oxide products, the identity of which depends on the metal cations
present in the parent hexahydroxometallates.
创建时间：
2016-02-18
