Synthesis and characterization of [PEG400-alt-DEOS]/(delta-MgCl2)0.2597 complex

An alternating copolymer with the formula alpha-hydro-omega-oligo(oxyethylene)hydroxy poly[oligo(oxyethylene)oxydimethylsilylene] and a molecular weight of 9860 was synthesized. Doping of this polymer with the extremely anhydrous salt delta-MgCl2 resulted in a new magnesium comples with the formula poly[PEG400-alt-DEOS]/(MgCl2)0.2597. The structural hypothesis for the polymer was proposed on the basis of elemental analyses and molecular weight. Detailed H-1, C-13 and Si-29 NMR spectral investigations fully confirmed the structure of poly[PEG400-alt-DEOS], Mid-infrared FT-IR studies of tehj polymer showed that is presents 1) a sufficient number of terminally hydroxyl groups to confer a substantial degree of dissolution and salt-dissociation in the polymer ocmplex; and 2) polyether fragments in a conformational geometry close to trans-gauche-trans. The conductivity against temperature plit for this very amorphous magnesium polymer complex demonstrated that the material conducts ionically by means of two typed of charge migration mechanisms.