A monometallic f element complex of dinitrogen: (C5Me5)3U(eta1-N2).
The reactivities of (C5Me5)3U and (C5Me4H)3U were compared using both common (THF) and nontraditional (N2) ligands for f elements. THF coordinates the less-crowded (C5Me4H)3U to form (C5Me4H)3U(THF) while ring opening occurs with sterically crowded (C5Me5)3U. N2 at 80 psi reacts with (C5Me5)3U to form (C5Me5)3U(eta1-N2) [U-N(N2) = 2.492(10) A, nu(N2) = 2207 cm-1, and cnt-U-N2 = 90 degrees ], whereas only (C5Me4H)3U was isolated under 80 psi of N2.
Evans
William J
WJ
Department of Chemistry, University of California, Irvine, CA 92697-2025, USA. wevans@uci.edu
Kozimor
Stosh A
SA
Ziller
Joseph W
JW