Crystal Structure of [(C2H5)2(CH3)2N][Pd(dmit)2]2 at High Pressure

The high-pressure crystal structure determination was performed on [(C 2 H 5 ) 2 (CH 3 ) 2 N][Pd(dmit) 2 ] 2 , which is a unique molecular superconductor with pressure-induced insulating phase above about 7 kbar. The structure analysis at 10 kbar revealed the pressure-induced cation ordering coupled with the doubling of the unit cell.