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Synthesis of Phospholyltetrahydroboratouranium Complexes. Crystal Structure of [(η 5 ‐C 4 Me 4 P) 2 U(BH 4 ) 2 ]
Author(s) -
Baudry Denise,
Ephritikhine Michel,
Nief François,
Ricard Louis,
Mathey François
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199014851
Subject(s) - crystallography , uranium , paramagnetism , crystal structure , atom (system on chip) , chemistry , materials science , physics , metallurgy , quantum mechanics , computer science , embedded system
P‐NMR chemical shifts of δ = 3471(!) and δ = 227 reflect the unusual bonding situation in the dimeric, paramagnetic organouranium( III ) complex 1 . The signal shifted extremely downfield can be assigned to the P atom of the bridging phospholyl ligand. 1 can be oxidized with TlBH 4 to the uranium( IV ) sand‐°Ch [(C 4 Me 4 P) 2 U(BH 4 ) 2 ], which on reduction with Na‐amalgam forms 1 again.