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Title: Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C 5Me 5) 2U(η 4-1,2,3,4-PhC 4Ph)

A new uranium metallacyclocumulene, (C 5Me 5) 2U(η 4-1,2,3,4-PhC 4Ph), was synthesized by both reaction of (C 5Me 5) 2UCl 2 with 1,4-diphenylbutadiyne in the presence of KC 8 and by ligand exchange between (C 5Me 5) 2U(η 2-Me 3SiC 2SiMe 3) and 1,4-diphenylbutadiyne. Lastly, full characterization of (C 5Me 5) 2U(η 4-1,2,3,4-PhC 4Ph) is reported, including the solid-state structure. (C 5Me 5) 2U(η 4-1,2,3,4-PhC 4Ph) displays an unusually detailed UV–visible spectrum, which is rare for uranium(IV) metallocene complexes.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ; ORCiD logo [3] ;  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Vermont, Burlington, VT (United States). Dept. of Chemistry
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Vermont, Burlington, VT (United States). Dept. of Chemistry
Publication Date:
Report Number(s):
LA-UR-16-26750
Journal ID: ISSN 0022-328X; TRN: US1703099
Grant/Contract Number:
AC52-06NA25396; CHE-1265608; CHE-1565658; AC05-06OR23100
Type:
Accepted Manuscript
Journal Name:
Journal of Organometallic Chemistry
Additional Journal Information:
Journal Volume: 829; Journal Issue: C; Journal ID: ISSN 0022-328X
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27); USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Uranium; Pentamethylcyclopentadienyl; Metallacyclocumulene; Electronic spectroscopy; X-ray crystallography
OSTI Identifier:
1400126
Alternate Identifier(s):
OSTI ID: 1398571

Pagano, Justin K., Erickson, Karla A., Scott, Brian L., Morris, David E., Waterman, Rory, and Kiplinger, Jaqueline L.. Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph). United States: N. p., Web. doi:10.1016/j.jorganchem.2016.10.034.
Pagano, Justin K., Erickson, Karla A., Scott, Brian L., Morris, David E., Waterman, Rory, & Kiplinger, Jaqueline L.. Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph). United States. doi:10.1016/j.jorganchem.2016.10.034.
Pagano, Justin K., Erickson, Karla A., Scott, Brian L., Morris, David E., Waterman, Rory, and Kiplinger, Jaqueline L.. 2016. "Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph)". United States. doi:10.1016/j.jorganchem.2016.10.034. https://www.osti.gov/servlets/purl/1400126.
@article{osti_1400126,
title = {Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph)},
author = {Pagano, Justin K. and Erickson, Karla A. and Scott, Brian L. and Morris, David E. and Waterman, Rory and Kiplinger, Jaqueline L.},
abstractNote = {A new uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph), was synthesized by both reaction of (C5Me5)2UCl2 with 1,4-diphenylbutadiyne in the presence of KC8 and by ligand exchange between (C5Me5)2U(η2-Me3SiC2SiMe3) and 1,4-diphenylbutadiyne. Lastly, full characterization of (C5Me5)2U(η4-1,2,3,4-PhC4Ph) is reported, including the solid-state structure. (C5Me5)2U(η4-1,2,3,4-PhC4Ph) displays an unusually detailed UV–visible spectrum, which is rare for uranium(IV) metallocene complexes.},
doi = {10.1016/j.jorganchem.2016.10.034},
journal = {Journal of Organometallic Chemistry},
number = C,
volume = 829,
place = {United States},
year = {2016},
month = {10}
}