Figure 7

13C NMR spin–lattice relaxation times T1ρ for CH2-1 and CH2-2 of [(CH2)3(NH3)2]CuCl4 as a function of inverse temperature (Inset: Correlation times for CH2-1 and CH2-2 in [(CH2)3(NH3)2]CuCl4 as a function of inverse temperature. Solid lines represent the activation energies).