Formation of a Eu(iii) borate solid species from a weak Eu(iii) borate complex in aqueous solution?
DALTON TRANSACTIONSDALTON T Pub Date: DOI: 10.1039/C4DT00843J
Abstract
In the presence of polyborates (detected by 11B-NMR) the formation of a weak Eu(III) borate complex (lg β11 ～ 2, estimated) was observed by time-resolved laser-induced fluorescence spectroscopy (TRLFS). This complex is a precursor for the formation of a solid Eu(III) borate species. The formation of this solid in solution was investigated by TRLFS as a function of the total boron concentration: the lower the total boron concentration, the slower is the solid formation. The solid Eu(III) borate was characterized by IR spectroscopy, powder XRD and solid-state TRLFS. The determination of the europium to boron ratio portends the existence of pentaborate units in the amorphous solid.
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Journal Name：DALTON TRANSACTIONSDALTON T
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CAS no.: 89640-58-4
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