“…A TiF 2À 6 anion surrounded by six cations and a TiF 4 molecule surrounded by four alkali metal cations have the optimum reducing ability. In our opinion, these results are in full compliance with the idea of outersphere cationisation in melts containing anions with complex compositions 3,44,45 confirmed by electrochemical studies on tungstate-and molybdate-containing systems. 83…”