Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Ca(BH4)2 as a simple tool for the preparation of thorium and uranium metallocene borohydride complexes: First synthesis and crystal structure of (C5Me5)2Th(η3-H3BH)2

Journal Article · · Inorganic Chemistry Communications
Here, calcium borohydride allows for the high-yielding synthesis of (C5Me5)2An(η3-H3BH)2 (An = Th, U) by reaction with (C5Me5)2AnCl2 (An = Th, U). While a preparative synthesis of (C5Me5)2U(η3-H3BH)2 has been previously reported in the literature using K(C5Me5) and U(BH4)4, the use of Ca(BH4)2 is higher yielding and mild. Full characterization of the novel compound (C5Me5)2Th(η3-H3BH)2 is presented.
Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
LDRD; USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1351990
Alternate ID(s):
OSTI ID: 1396374
Report Number(s):
LA-UR--17-20498
Journal Information:
Inorganic Chemistry Communications, Journal Name: Inorganic Chemistry Communications Journal Issue: C Vol. 77; ISSN 1387-7003
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (22)

Formal Three-Electron Reduction by an f-Element Complex: Formation of [{(C5Me5)(C8H8)U}2(C8H8)] from Cyclooctatetraene and [(C5Me5)3U] journal January 2000
Reductive Coupling of Acetonitrile by Uranium and Thorium Hydride Complexes To Give Cyanopentadienyl Dianion (C6N3H7)2− journal January 2008
Arene uranium borohydrides: synthesis and crystal structure of η-C6Me6)U(BH4)3 journal July 1989
Tetramethylphospholyluranium complexes and their pentamethylcyclopentadienyl analogues journal February 1994
Synthesis and crystal structure of [UO2(BH4)2(hmpa)2], a novel uranyl complex and the first metal oxoborohydride journal August 2007
Tuning the Oxidation State, Nuclearity, and Chemistry of Uranium Hydrides with Phenylsilane and Temperature: The Case of the Classic Uranium(III) Hydride Complex [(C 5 Me 5 ) 2 U(μ-H)] 2 journal February 2016
Covalent transition metal, lanthanide, and actinide tetrahydroborate complexes journal April 1977
Synthesis, Structure, and Reactions of Hydride, Borohydride, and Aluminohydride Compounds of the f-Elements journal October 1997
Preparation of tertiary phosphine complexes of tetravalent and trivalent uranium methyltrihydroborates. Crystal structures of tetrakis(methyltrihydroborato)(1,2-bis(dimethylphosphino)ethane)uranium(IV) and tris(methyltrihydroborato)bis(1,2-bis(dimethylphosphino)ethane)uranium(III) journal December 1984
Uranium and Thorium Hydride Complexes as Multielectron Reductants: A Combined Neutron Diffraction and Quantum Chemical Study journal February 2012
Chloro-, methyl-, and (tetrahydroborato)tris((hexamethyldisilyl)amido)thorium(IV) and uranium(IV). Crystal structure of (tetrahydroborato)tris((hexamethyldisilyl)amido)thorium(IV) journal May 1979
New Chemistry from an Old Reagent: Mono- and Dinuclear Macrocyclic Uranium(III) Complexes from [U(BH 4 ) 3 (THF) 2 ] journal July 2014
Multi-Electron Reduction from Alkyl/Hydride Ligand Combinations in U 4+ Complexes journal September 2008
Synthesis of Cationic Cyclooctatetraene Uranium Complexes by Protonolysis of Borohydride Precursors: The First Cationic Organometallic Borohydride and the First Organometallic Dication of an f Element journal June 2000
Bis(permethylindenyl) Complexes of Thorium:  Synthesis, Structure, and Reactivity journal July 2001
Reactivity of Tuck-in and Tuck-over Uranium Metallocene Complexes journal September 2010
Arene-ligated heteroleptic terphenolate complexes of thorium journal January 2014
Phenylsilane as a safe, versatile alternative to hydrogen for the synthesis of actinide hydrides journal January 2015
[(C5Me5)2U][(µ-Ph)2BPh2] as a four electron reductant journal January 2005
Novel hydroboration of highly substituted alkenes catalysed by borohydride complexes of uranium, neodymium and zirconium journal January 1995
Uranium(iv) amido-borohydrides as highly active diene polymerisation catalysts journal January 2013
Some 60 new space-group corrections journal January 2001

Cited By (2)



Figures / Tables (1)


Similar Records

Preparation and properties of the actinide borohydrides: Pa(BH/sub 4/)/sub 4/, Np(BH/sub 4/)/sub 4/ and Pu(BH/sub 4/)/sub 4/
Journal Article · Tue Mar 14 23:00:00 EST 1978 · J. Am. Chem. Soc.; (United States) · OSTI ID:6786399

Synthesis and characterization of a new and electronically unusual uranium metallacyclocumulene, (C5Me5)2U(η4-1,2,3,4-PhC4Ph)
Journal Article · Fri Oct 21 20:00:00 EDT 2016 · Journal of Organometallic Chemistry · OSTI ID:1400126

Crystallographic characterization of (C5H4SiMe3)3U(BH4)
Journal Article · Thu Mar 11 19:00:00 EST 2021 · Acta Crystallographica. Section E, Crystallographic Communications · OSTI ID:1807872