Solvation of Cobalt Salts by Oligomeric Polyethers
Technical rept. 31 May 1991-30 Jun 1992,
PENNSYLVANIA UNIV PHILADELPHIA DEPT OF CHEMISTRY
Pagination or Media Count:
Polyether-salt systems involving CoBr2 dissolved in oligomeric polyethylene glycol PEG and polytetra-methylene glycol PTMG have been investigated. Both systems demonstrated conductivity maxima as a function of salt concentration. PTMG electrolytes had dramatically lower conductivities max. sigma approx. 3.6 x 10 7 Scm for PTMG, max. sigma approx. 1.45 x 10-5 Scm for PEG at room temperature which can be explained on the basis of spectral data which indicate the existence of predominantly neutral species in PTMG. The reason for the difference in the types of species present in PEG and PTMG can be rationalized on the basis of the chelate effect.
- Physical Chemistry