Electrical conductivity of (perylene)2M(MNT)2(M=Pt, Au) under pressure

The authors report electrical resistivity measurements along the high conductivity axis of the organic conductors (perylene) 2 M(MNT) 2 (MNT=cis-2,3-dimercapto-2-butenedinitrile, commonly called maleonitriledithiolate, S 2 C 2 (CN) 2 ) and M=Pt, Au, at pressures up to 27 kbar. The variation of the resistivity minimum and of the metal-insulator transition temperatures are discussed and results are compared with corresponding data for other organic conductors. They also re-examine the analysis of possible mechanisms for the behaviour of these compounds at ambient pressure and discuss the non-zero pressure behaviour.