Ce. Keller et al., CHARACTERIZATION OF SPECIES IN ETHYLALUMINUM DICHLORIDE MOLTEN-SALTS BY AL-27 NMR, Inorganica Chimica Acta, 209(2), 1993, pp. 239-240
A new room temperature melt containing 1-ethyl-3-methyl-imidazolium ch
loride (MEICl) and ethylaluminum dichloride (EtAlCl2) contains EtAlCl2
dimers and EtAlCl3- as determined by Al-27 NMR of neat EtAlCl, and a
saturated LiCl-EtAlC12 solution at 60-degrees-C. The Al-27 NMR peaks i
n the MEICI-EtAlCl2 melt at 129 and 102 ppm are assigned to the dimers
(cis and trans) of EtAlC1, (129 ppm) and EtAlCl3- (102 ppm), respecti
vely. Semi-empirical calculations support the formation of EtAlCl3- ov
er EtAlCl2 dimer formation from Cl- and EtAlCl2.