mapping key in vim [duplicate]

shift       Shift_L (0x32),  Shift_R (0x3e)lock      control     Control_L (0x25),  Control_R (0x69)mod1        Alt_L (0x40),  Alt_R (0x6c),  Meta_L (0xcd)mod2        Num_Lock (0x4d)mod3        Hyper_L (0x42),  Hyper_L (0xcf)mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce)mod5        ISO_Level3_Shift (0x5c),  Mode_switch (0xcb)

So is it possible to remap this mod3 key in vim as a leader.