An electron accepting compound and its manufacturing method, and a polymerization initiator compoun

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PROBLEM TO BE SOLVED : To provide an electron-accepting compound that stably and easily forms a thin film or easily performs multi-layering of organic thin film layer and is useful for improving productivity of an organic electronics element, especially a polymer type organic EL element.SOLUTION : The electron-accepting compound includes a cation and/or a cation radical of a first charge-transporting compound and one of the anions represented by general formulas (1b)-(5b), wherein Y-Yare each independently a divalent connecting group; R-Rare each independently an electron-attractive organic substituent (may contain further a substituent or heteroatom in the structure); Eis an oxygen atom, Eis a nitrogen atom, Eis a carbon atom, Eis a boron atom or gallium atom and Eis a phosphorus atom or antimony atom.