Figure 4
Difference Fourier maps around the Tl1 mean position (large central circles), showing (a) harmonic refinement (minimum and maximum densities: −9.84 and 11.02 e Å−3, respectively; step: 0.5 e Å−3), and (b) anharmonic refinement (minimum and maximum densities: −2.08 and 2.92 e Å−3, respectively; step: 0.5 e Å−3). |