NOVELTY - Ion-conducting polymer obtainable by polymerizing metal complex compounds (I), is new.    USE - The ion-conducting polymer is useful: as an electrolyte for electrochemical cells and energy storage devices, an ion-conducting layer or a metal ions permeable membrane, preferably alkali metal ions-, preferably lithium permeable membrane in sensors, and as an additive in dye sensitive solar cells; and in electrochemical displays, ion exchange matrices, galvanic cells and supercapacitors. (I) are useful as a conductive salt or additive for electrochemical cells and energy storage devices (all claimed).    ADVANTAGE - The ion-conducting polymer exhibits high lithium ion conductivity even at low temperatures, high transport number of lithium ions, and high chemical, electrochemical and thermal stability.    DETAILED DESCRIPTION - Ion-conducting polymer obtainable by polymerizing metal complex compounds of formula ((M(n+))mX((m-)n)) (I), is new.    M = Li, Na, K and/or Mg;    X = 4-7-membered heterocyclyl (containing at least two conjugated double bonds, and 1-4 N, B, O and/or S) or heterocyclyl (polycondensed, directly bridged or connected by 1-10C alkyl, and both mono- or polysubstituted by 1-12C alkyl or 1-12C cycloalkyl (both optionally branched and mono- or polyfluorinated or perfluorinated) or 1-12C alkyl or 3-7C cycloalkyl (both optionally branched and mono-, poly- or completely halogenated by Cl, Br and/or I) or 1-10C alkoxy, 1-10C alkanoyl, 1-10C alkane-amidyl, nitrile, SF5, BF3, guanidinyl, amidinyl, sulfonyl, sulfonimidyl, NO2, NH 2-, NHR- or N(R)2-);    R = 1-5C alkyl, 1-5C alkanoyl or aryl (optionally substituted by 1-10C alkyl, 1-10C perfluoroalkyl, 1-10C alkoxy, 1-10C alkane-amidyl, nitrile, SF5, amidinyl, sulfonyl, sulfonimidyl, NO2, F, Cl, Br, I, NH2, NHR1 or N(R1)2);    R1 = 1-5C alkyl or 1-5C alkanoyl; and    m, n = 1-2.    INDEPENDENT CLAIMS are also included for:    (1) an electrolyte comprising (I) and/or the above ion-conducting polymer;    (2) preparing the ion-conducting polymer;    (3) an electrochemical cell comprising a positive electrode, a negative electrode and the above electrolyte, which comprises the ion-conducting polymer, where the electrochemical cell does not comprise separator;    (4) an electrochemical energy storage device, preferably an alkali metal ion battery, lithium-based energy storage device or a supercapacitor comprising the electrolyte;    (5) (I); and    (6) preparing substituted pyrazole compounds, comprising reacting diketone compounds of formula (R2-C(=O)-CH(R3)-C(=O)-R4) (II) with hydrazine hydrate under the addition of phosphorus pentoxide.    R2, R4 = 1-12C alkyl or 1-12C cycloalkyl (both optionally branched and mono-, poly- or perfluorinated), nitrile or SF5); and    R3 = 1-12C alkyl or 1-12C cycloalkyl (both optionally branched, optionally mono- or polyfluorinated or perfluorinated), H, nitrile or SF5.