PMID- 22267056
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20120509
LR  - 20120213
IS  - 1521-3765 (Electronic)
IS  - 0947-6539 (Linking)
VI  - 18
IP  - 8
DP  - 2012 Feb 20
TI  - Synthesis and characterization of boranate ionic liquids (BILs).
PG  - 2254-62
LID - 10.1002/chem.201102460 [doi]
AB  - Straightforward access to hydridoborate-based ionic liquids (BILs) is provided. 
      They fall into a barely developed area of research and are of interest as, for 
      example, reagents for organic synthesis. A series of pure [BH(4)](-) ILs with 
      1-butyl-2,3-dimethylimidazolium (BMMIM), 1-ethyl-3-methylimidazolium (EMMIM), 
      1-propyl-1-methylpiperidinium (PropMPip), and1-butyl-1-methylpyrrolidinium (BMP) 
      cations were prepared. All synthesized ILs are well soluble in CH(2)Cl(2). We 
      developed a procedure that gives clean products with correct elemental analyses. 
      In contrast to earlier reports, which when conducted by us yielded only mixtures 
      of the boranate anion with major halide contamination (maximum [BH(4)](-) 
      content: 77.5 %). These materials can be viewed as the starting material for the 
      (hypothetical) hydrogen-storage redox shuttling sequence between [BH(4)](-) and 
      [B(12)H(12)](2-), in which the triboranate anion [B(3)H(8)](-) is a formal 
      intermediate. Here we also developed a facile route to [B(3)H(8)](-) ILs with 
      [BMMIM](+), [EMMIM](+), [PropMPip](+), and [NBu(4)](+), in which Na[BH(4)] reacts 
      in situ (enhanced by ultrasound) with the solvent CH(2)Cl(2) as the oxidizing 
      agent to give the triboranate IL in high yield and purity according to the 
      equation: 
      3 [BH(4)](-)+2 CH(2)Cl(2)+[Cat](+)-->[B(3)H(8)](-)[Cat](+)+H(2)+2 CH(3)Cl+2 Cl(-). 
      We further investigated this reaction path by additional NMR spectroscopic 
      experiments, powder-XRD analysis, and quantum chemical DFT calculations.
CI  - Copyright (c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Burchner, Mara
AU  - Burchner M
AD  - Institut fur Anorganische und Analytische Chemie, Albertstrasse 21, 79104 
      Freiburg, Germany.
FAU - Erle, Anna M T
AU  - Erle AM
FAU - Scherer, Harald
AU  - Scherer H
FAU - Krossing, Ingo
AU  - Krossing I
LA  - eng
PT  - Journal Article
DEP - 20120120
PL  - Germany
TA  - Chemistry
JT  - Chemistry (Weinheim an der Bergstrasse, Germany)
JID - 9513783
EDAT- 2012/01/24 06:00
MHDA- 2012/01/24 06:01
CRDT- 2012/01/24 06:00
PHST- 2011/08/08 00:00 [received]
PHST- 2012/01/24 06:00 [entrez]
PHST- 2012/01/24 06:00 [pubmed]
PHST- 2012/01/24 06:01 [medline]
AID - 10.1002/chem.201102460 [doi]
PST - ppublish
SO  - Chemistry. 2012 Feb 20;18(8):2254-62. doi: 10.1002/chem.201102460. Epub 2012 Jan 
      20.