Electro‐Conductive Single‐Molecule Magnet Composed of a Dysprosium(III)‐Phthalocyaninato Double‐Decker Complex with Magnetoresistance
Tetsu Sato, Brian K. Breedlove, Masahiro Yamashita, Keiichi Katoh
Abstract
Abstract A one‐dimensional (1D) arrangement of an unsubstituted partially oxidized Dy 3+ double‐decker complex, [DyPc 2 ]I x (Pc=phthalocyaninato, I=iodide; 1.93<x<2.26) ( 1 ), was obtained by using electro‐oxidation and chemical oxidation. In 1 , the Pc ligands were partially oxidized, and I 3 − ion was present as a counter ion. From the results of spectrophotometric analysis on 1 , the π radicals were delocalized in a 1D column and behaved as a conductor even at low‐temperatures. Since conductivity was observed at temperatures lower than the blocking temperature (T B ), magnetoresistance (MR) effects corresponding to a magnetic hysteresis of single‐molecule magnet (SMM) were observed when the galvanomagnetic characteristics were investigated at 2.2 K.