Radical anion salts of N,N′-dicyanoquinonediimine (DCNQI): Conductivity and magnetic properties

摘要: Abstract DC-conductivity (σ), static susceptibility (χ), ESR-intensity, resonance position and linewidth of (R 1 ,R 2 -N,N′ -DCNQI) Me ( R = CH 3 ; , Cl Br Ag Cu ) between 300 K 1.2 are reported. All copper salts have a high χ about 5 – 6.10 −4 emu/mole in the conducting temperature range. This can be explained by strong electron-electron repulsion. In two salts, CDW driven phase transition is seen antiferromagnetic (AFMR) found below 10 K. The lack any ESR signal state due to spin-orbit coupling (SOC) given nitrogen(p)-Cu(d) admixture which implies some electronic transport across stacks. silver do not exhibit these features. They behave as quasi-one dimensional conductors with reduced SOC effects. conductivity limited solely anion stack. Consequently, 1D-localization effects dominate dependence conductivity.