ic6b00242_si_001.cif (8.9 MB)

K₈(K₅F)U₆Si₈O₄₀: An Intergrowth Uranyl Silicate

dataset

posted on 2016-03-14, 17:19 authored by Gregory Morrison, T. Thao Tran, P. Shiv Halasyamani, Hans-Conrad zur Loye

Single crystals of K₈(K₅F)U₆Si₈O₄₀ were grown from a mixed alkali halide flux. K₈(K₅F)U₆Si₈O₄₀ is the first intergrowth uranyl silicate, being composed of alternating slabs related to two previously reported uranyl silicates: Cs₂USiO₆ and [Na₉F₂][(UO₂)(UO₂)₂(Si₂O₇)₂]. It exhibits intense luminescence, which is influenced by the [(UO₂)₂O] dimers present in the structure.