Preparation and abnormal magnetic properties of charge transfer complex of C60 with tetrakis - (N-pyrolidinyl) - ethylene

Air sensitive strong electron donor tetrakis - (N - pyrolidinyl) - ethylene (TPYE) was synthesized and its structure was established from its iodine salt by elemental analysis, and spectroscopic method. Charge transfer complex of C60 with TPYE was prepared. Magnetic studies conducted by SQUID magnetometer show that the magnetic behavior of TPYE-C60 could be described by supersition of paramagnetic and ferromagnetic component phases. The coercive forces are 105 Oe at 1.8K and 50 Oe at 4.5 K. The residual magnetizations are 6.4 × 10−4 emu/g at 1.8 K and 4.9 × 10−5 emu/g at 4.5 K respectively.