Synthesis, structure and photophysical properties of UO_2X_2(OvPPh_3)_2 (X = Cl, Br, I)

Emtithal Hashem; Thomas McCabe; Carola SchulzkeRobert J. Baker

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Synthesis, structure and photophysical properties of UO_2X_2(OvPPh_3)_2 (X = Cl, Br, I)

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The synthesis of a series of uranyl compounds via oxidation of Li(THF)_4UX_5(THF) (X = Cl, Br, I) in the presence of Ph_3PvO is described. The solid state structures of Li(OvPPh_3)(MeCN)_2_2UO_2Cl_4, UO_2Br_2(OvPPh_3)_2 and Li(OvPPh_3)_4I3, formed as a by-product from the oxidation of Li(THF)_4- UI_5(THF), is reported. The electronic absorption spectra and photoluminescence spectra of UO_2X2(OvPPh_3)_2 (X = Cl, Br, I) have been measured and no significant changes in the position of the emission (515-530 nm) or the lifetimes (ca. 1 μs) are observed in this series. However a bathochromic shift is observed in the U-X LMCT band in the electronic absorption spectrum.

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来源
《Dalton transactions: An international journal of inorganic chemistry》 |2014年第3期|1125-1131|共7页
作者
Emtithal Hashem; Thomas McCabe; Carola SchulzkeRobert J. Baker;
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作者单位

School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland;

Institut für Biochemie, Ernst-Moritz-Arndt Universit?t Greifswald, Felix-Hausdorff-Stra?e 4, D-17487 Greifswald, Germany;

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正文语种英语
中图分类化学;无机化学;
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oxidation; presence; structure;

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Synthesis, structure and photophysical properties of UO_2X_2(OvPPh_3)_2 (X = Cl, Br, I)

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