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Synthesis of the Uranium Triflates U(OTf) 3 and U(OTf) 4 – Crystal Structure of [U(OTf) 2 (OPPh 3 ) 4 ][OTf]
Author(s) -
Claude Berthet Jean,
Lance Monique,
Nierlich Martine,
Ephritikhine Michel
Publication year - 1999
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199911)1999:11<2005::aid-ejic2005>3.0.co;2-a
Subject(s) - chemistry , uranium , crystal structure , medicinal chemistry , stereochemistry , organic chemistry , metallurgy , materials science
Reactions of pure triflic acid (TfOH) with UH 3 at 20 °C and with U or UCl 3 at 120 °C afforded U(OTf) 3 ( 1 ), which was transformed into U(OTf) 4 ( 2 ) by reaction with TfOH at 180 °C; 2 was also synthesized by treating UCl 4 with TfOH at 120 °C. The yields were in excess of 90%. The crystal structure of [U(OTf) 2 (OPPh 3 ) 4 ][OTf] ( 3 ) was determined, which revealed a seven‐coordinate uranium(III) centre bound by monodentate and bidentate triflate ligands.