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Reactions of UCl 4 with t Bu‐Calix[4, 5, and 6]arenes: The First “Non‐Uranyl” Calixarene Complexes of Uranium
Author(s) -
Leverd Pascal C.,
Nierlich Martine
Publication year - 2000
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 - 10.1002/1099-0682(200008)2000:8<1733::aid-ejic1733>3.0.co;2-l
Subject(s) - chemistry , calixarene , uranyl , homoleptic , alkoxide , uranium , methylene bridge , inorganic chemistry , medicinal chemistry , stereochemistry , organic chemistry , catalysis , metal , molecule , ion , materials science , metallurgy
The reactions of UCl 4 with t Bu‐calix[4, 5, and 6]arenes ( t Bu‐calix[ n ]arene = H n L[ n ]) were used to isolate [{UCl(L[4])} 3 O] ( 1 ), [{U(L[5])} 2 O] 2− ( 2 ), and [U(H 3 L[6]) 2 ] ( 4 ). The dianionic species 2 could be oxidized to its U VI homologue [{U(L[5])} 2 O] ( 3 ). In contrast to 1 − 3 that are located around a μ‐oxo bridge, 4 can be viewed as a homoleptic alkoxide. 1 − 4 are the first “non‐uranyl” calixarene complexes of uranium to be reported.