Synthesis of permethyldodecaborate and paramagnetic dodecaborate salt
- Encino, CA
- Los Angeles, CA
The dodecamethyl closo-borane dianion [closo-B.sub.12 (CH.sub.3).sub.12 ].sup.2- and anion [closo-B.sub.12 (CH.sub.3).sub.12 ].sup.- were synthesized and characterized. Dodecamethyl-closo dodecaborate (2-) was produced from [closo-B.sub.12 H.sub.12 ].sup.2-, using trimethylaluminum, and methyl iodide and modified Friedel-Crafts reaction conditions. The anion was produced from the dianion by chemical oxidation using ceric (4) ammonium nitrate in acetonitrile. The anion and dianion were both characterized by .sup.1 H and .sup.11 B NMR spectroscopy, high-resolution fast atom bombardment (FAB) mass spectrometry, cyclic voltammetry, and single-crystal X-ray diffraction. The "camouflaged" polyhedral borane anion [closo-B.sub.12 (CH.sub.3).sub.12 ].sup.2-, can be used as a precursor to materials that offer a broad spectrum of novel applications ranging from drug applications and supramolecular chemistry to use as a weakly-coordinating dianion.
- Research Organization:
- Univ. of California (United States)
- DOE Contract Number:
- FG03-95ER61975
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Number(s):
- US 6355840
- OSTI ID:
- 874276
- Country of Publication:
- United States
- Language:
- English
An unpaired electron incarcerated within an icosahedral borane cage: synthesis and crystal structure of the blue, air-stable {[closo-B12(CH3)12]·}− radical
|
journal | January 1999 |
Decakis(dichloromethyl)-1,12-dicarba-closo-dodecaborane(12): Camouflage of an Icosahedral Carborane by Using Bulky Functional Substituents
|
journal | November 1996 |
An Icosahedral Array of Methyl Groups Supported by an Aromatic Borane Scaffold: The [ c loso -B 12 (CH 3 ) 12 ] 2 - Ion
|
journal | June 1999 |
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Related Subjects
permethyldodecaborate
paramagnetic
dodecaborate
salt
dodecamethyl
closo-borane
dianion
closo-bsub12
chsub3sub12
sup2-
anion
sup-
synthesized
characterized
dodecamethyl-closo
2-
produced
hsub12
trimethylaluminum
methyl
iodide
modified
friedel-crafts
reaction
conditions
chemical
oxidation
ceric
ammonium
nitrate
acetonitrile
sup1
sup11
nmr
spectroscopy
high-resolution
fast
atom
bombardment
fab
mass
spectrometry
cyclic
voltammetry
single-crystal
x-ray
diffraction
camouflaged
polyhedral
borane
precursor
materials
offer
broad
spectrum
novel
applications
ranging
drug
supramolecular
chemistry
weakly-coordinating
ammonium nitrate
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