Abstract

Crystal Structure of Boron Triiodide, BI3 Boron triiodide as a micro-crystalline powder was obtained after sublimation of the reaction product of NaBH4 and iodine. An X-ray powder diagram of the temperature-, air-, and light-sensitive compound was collected at –73 °C. According to the results of the Rietveld refinement, the crystal structure of BI3 is isotypic to that of BCl3 (space group P63/m, no. 176, a = 699.09(2), c = 736.42(3) pm). The B–I bond length was determined to be 211.2(8) pm.

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