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Heavy electron-doped FeSe-derived materials have attracted attention due to their uncommon electronic struc-tures with only ’electron pockets’, and they are different from other iron-based superconductors. Here, we report the crystal structures, superconductivities and normal state properties of two new Li-doped FeSe-based materials, i.e., Li0.15(C3H10N2)0.32FeSe (P-4) and Lix(C3H10N2)0.32FeSe (P4/nmm, 0.25
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