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Microscale Synthesis of UO2Cl2(OPPh3)2

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Francisco J. Arnáiz and Mariano J. Miranda

Universidad de Burgos, Lab. de Química Inorgánica, 09001 Burgos, SPAIN

J. Chem. Educ., 1998, 75 (11), p 1457

DOI: 10.1021/ed075p1457

Publication Date (Web): November 1, 1998

Section:

History, Education, and Documentation

Abstract

UO₂Cl₂(OPPh₃)₂ is a useful starting material for the preparation of other anhydrous uranyl compounds via ligand replacement. The product has been obtained by treating UO₂Cl₂ with OPPh₃ in anhydrous ethanol. In turn, UO₂Cl₂ is prepared by heating UCl₄ with oxygen at 300-350 °C. The method described here is very appropriate for teaching some aspects of uranium chemistry in the inorganic chemistry lab. It involves the transformation of uranyl acetate into the chloride and is based on the capability of OPPh₃ to displace water and on the low solubility of the product in acetone.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Coordination Compounds

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Received: August 03, 2009

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Microscale Synthesis of UO2Cl2(OPPh3)2