Spin Correlation in Ion Radical Salts; The System (Cs+)2(TCNQ)3=

摘要: The physical properties of the (Cs+)2(TCNQ)3= ion radical salt as measured by electron paramagnetic resonance are discussed in terms preliminary crystal‐structure data. is characterized a thermally accessible triplet state lying 0.16 ev above singlet ground state; described rhombic spin Hamiltonian H=βH·g·S+DSz2+E(Sx2−Sy2), with D/hc=±0.009367 cm—1, E/hc=±0.001513 and gx, gy, gz equal to, respectively, 2.0025, 2.0015, 2.0003.Some conclusions drawn regarding general class salts exhibiting character. concept delocalization over several TCNQ molecules strengthened, and, from consideration temperature‐dependent exchange narrowing effects present these systems, arguments presented to effect that excitation may be free propagate exciton.