Pairing heterocyclic cations with closo-icosahedral borane and carborane anions. i. benchtop aqueous synthesis of binary triazolium and imidazolium salts with limited water solubility.
Ten new salts that pair triazolium and imidazolium cations with closo-icosahedral anions [B(12)H(12)](2-) and [CB(11)H(12)](-) were synthesized in water solvent using an open-air, benchtop method. These unreported [Heterocyclium](2)[B(12)H(12)] and [Heterocyclium][CB(11)H(12)] salts extend reports of [Imidazolium][CB(11)H(12)] and [Pyridinium][CB(11)H(12)] salts that were synthesized in anhydrous organic solvents under an inert atmosphere with glovebox or Schlenk techniques. Spectroscopic data, melting points, and densities are reported for each salt. Single-crystal X-ray structures are provided for the five new [B(12)H(12)](2-) salts.
Shackelford
Scott A
SA
Air Force Research Laboratory, Propellants Branch (AFRL/RZSP), 10 East Saturn Boulevard, Edwards AFB, California 93524-7680, USA. scottshack@roadrunner.com
Belletire
John L
JL
Boatz
Jerry A
JA
Schneider
Stefan
S
Wheaton
Amanda K
AK
Wight
Brett A
BA
Hudgens
Leslie M
LM
Ammon
Herman L
HL
Strauss
Steven H
SH