SCHEDULED MAINTENANCE
Synthesis, structure and photophysical properties of [UO2X2(O![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
PPh3)2] (X = Cl, Br, I)†
Abstract
The synthesis of a series of uranyl compounds via oxidation of [Li(THF)4][UX5(THF)] (X = Cl, Br, I) in the presence of Ph3PO is described. The solid state structures of [Li(OPPh3)(MeCN)2]2[UO2Cl4], [UO2Br2(OPPh3)2] and [Li(OPPh3)4][I3], formed as a by-product from the oxidation of [Li(THF)4][UI5(THF)], is reported. The electronic absorption spectra and photoluminescence spectra of [UO2X2(OPPh3)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.
![Graphical abstract: Synthesis, structure and photophysical properties of [UO2X2(O [[double bond, length as m-dash]] PPh3)2] (X = Cl, Br, I)](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C3DT52480A&imageInfo.ImageIdentifier.Year=2014)
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![[double bond, length as m-dash]](https://www.rsc.org/images/entities/h2_char_e001.gif)
PPh3)2] (X = Cl, Br, I)
