科研之友
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摘要
A cage cluster consisting of 31 uranyl and 9 Sm3+ polyhedra self-assembles in an alkaline aqueous peroxide solution and crystallizes (U31Sm9). TrirrierS of Sm3+ polyhedra are templated by mu(3)-eta(2):eta(2):eta(2)-peroxide groups and link to oxo atoms of uranyl ions: Three such trimers link into, a ring through uranyl hexagonal bipyramids, and these are attached through six polyhedra to a unit consisting of 21 uranyl hexagonal bipyramids to complete the cage. Luminescence spectra collected with an excitation wavelength of 420 nm reveal fine structure, which is not observed for a cluster containing only uranyl polyhedra.
- 出版日期2016-3-21
