Formation Principles for Vanadium Selenites: The Role of pH on Product Composition
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https://figshare.com/articles/dataset/Formation_Principles_for_Vanadium_Selenites_The_Role_of_pH_on_Product_Composition/2234623
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资源简介：
A series
of organically templated vanadium selenites has been prepared
under mild hydrothermal conditions. Single crystals of [C5H14N2][(VO)3(SeO3)2(HSeO3)4], [C5H14N2][VO(SeO3)2], [(R)-C5H14N2][(VO)3(SeO3)2(HSeO3)4], and [(S)-C5H14N2][(VO)3(SeO3)2(HSeO3)4] were
grown from VOSO4, SeO2, and 2-methylpiperazine.
Controlling the initial pH of the reaction mixture allows for one
to select between the compounds found in the VOSO4/SeO2/2-methylpiperazine system, as the solution pH directly affects
the relative ratio of the HSeO3– and
SeO32– concentrations. Moreover, partial
resolution of racemic 2-methylpiperazine is observed in [C5H14N2][(VO)3(SeO3)2(HSeO3)4], which is understood through
the use of a one-dimensional Ising model. The use of enantiomerically
pure 2-methylpiperazine results in fully ordered and fully resolved
structures.
创建时间：
2014-11-17
