摘要:
A compound comprising a polyfluorinated anion of the formula [M1(XC(CFa(R1)b)(CFc(R2)d)R3)m(R4)n]−p and the use thereof is provided. Specifically, the present invention provides a compound comprising a anion which comprises a polyfluorinated alkoxide coordinated to a transition metal, or a Group III, IV or V element.
摘要:
A non-aqueous electric current producing electrochemical cell is provided comprising an anode and a cathode, an ionically permeable separator interposed between the anode and the cathode, and a non-aqueous electrolyte, the electrolyte comprising an ionically conducting salt in a non-aqueous medium, the ionically conducting salt corresponding to the formula: M+(Z*(J*)j(X*)x)−, wherein: M is a lithium atom, Z* is an anion group containing two or more Lewis basic sites and comprising less than 50 atoms not including hydrogen atoms, J* independently each occurance is a Lewis acid coordinated to at least one Lewis basic site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, X* independently each occurrence is selected from the group consisting of H, C1-C4 alkyl, alkoxide, halide and mixtures thereof, j is an integer from 2 to 12, and x is an integer from 0 to 4.
摘要:
Catalyst compositions for the polymerization of an olefin are disclosed which comprise a neutral metallocene and, as the ionizing agent an anionic aluminum-containing complex which is a fluorinated alkoxy and/or aryloxy aluminate. The fluorinated alkoxy aluminate can be of the formula A.sup.+ (Al(OR).sub.4).sup.-, where A.sup.+ is a cation capable of reacting with the neutral metallocene to produce a cationic metallocene and a non-reacting neutral species and R is a fluorinated alkyl and/or aryl group, with a representative group for A.sup.+ being (C.sub.6 H.sub.5).sub.3 C.sup.+ and with the representative fluorinated alkoxy aluminates including �Al(OC(Ph)(CF.sub.3).sub.2).sub.4 !.sup.-, where Ph is phenyl, and �Al(OC(CH.sub.3)(CF.sub.3).sub.2).sub.4 !.sup.-.
摘要:
A non-aqueous electrolyte for an electric current producing electrochemical cell is provided comprising an ionically conductive salt and an additional ionically conducting salt in a non-aqueous medium, the additional ionically conducting salt corresponding to the formula M+(Z*(J*)j)−, wherein: M is a lithium atom, Z* is an anion group containing two or more Lewis basic sites and comprising less than 50 atoms not including hydrogen atoms, J* independently each occurrence is a Lewis acid coordinated to at least one Lewis basic site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, and j is an integer from 2 to 12. The addition of these ionically conducting salts to electrolyte solutions containing LiPF6 (and/or other lithium compounds) improves the stability of the electrolyte solution.