
%0 Journal Article
%A Islam, N 
%T Optical spectra of the tetrahedral tetrabromocobalt(II) complex ion in molten tetrabutylphosphonium bromide
%J Australian Journal of Chemistry
%D 1973/11/01
%V 26
%N 11
%P 2371-2377
%K 
%R https://doi.org/10.1071/CH9732371
%U https://www.publish.csiro.au/paper/CH9732371 
%X Optical spectra of CoBr42- in molten tetrabutylphosphonium bromide are recorded and the bands interpreted as due to charge-transfer and ligand-field transitions. The resolved spin-allowed bands are similar to those reported earlier in organic solvents. Cobalt(II)-bromide-rich mixtures with tetrabutylphosphonium bromide are found to supercool to a glassy material. The effect of temperature on these bands has also been studied. 
