Charge disproportionation in (B EDT-TTF)(2)RbZn(SCN)(4)

The magnetic behavior in theta-(BEDT-TTF)(2)RbZn(SCN)(4) With a 2D closed Fermi surface has been studied by the precise measurements of the angular dependence of C-13-NMR lineshape. The results indicate the existence of charge disproportionation below the transition temperature (190 K). (C) 2000 Elsevier Science Ltd. All rights reserved.