Author/Authors :
Montgomery، نويسنده , , L.K. and Vestal، نويسنده , , R.M. and Starkey، نويسنده , , K.P. and Fravel، نويسنده , , B.W. and Samide، نويسنده , , M.J. and Peters، نويسنده , , D.G. and Mielke، نويسنده , , C.H. and Thompson، نويسنده , , J.D.، نويسنده ,
Abstract :
Analyses of CuBr and CuN(CN)2 used in the preparation of κ-(ET)2Cu[N(CN)2]Br reveal both magnetic (1–42 ppm) and nonmagnetic (1–5%) contaminants. Markedly different resistivity profiles are obtained for κ-(ET)2[Cu[N(CN)2]Br samples prepared from various Cu(I) sources; some profiles show little or no resistive hump near 100 K. Rotating disk voltammetry studies indicate that the E1/2 values for ET and the Cu[N(CN)2]Br anion are similar. Accordingly, considerable quantities of Cu(II) must be produced during the electrochemical synthesis of κ-(ET)2Cu[N(CN)2]Br. Whether Cu(II) that is generated in this manner is incorporated into κ-(ET)2Cu[N(CN)2]Br is under investigation.
Keywords :
Electrocrystallization , superconductors , organic , Electrochemical methods
