Figure 5.

Convergence of the ¹⁹F NMR spectrum of anti‐3,4‐difluoro‐n‐heptane (16‐spin system) as a function of the basis truncation level. Top left: six‐spin orders and below. Middle left: seven‐spin orders and below. Bottom left: eight‐spin orders and below; this calculation is indistinguishable from the exact simulation to within about 10⁻³ in relative amplitude. Right: contributions from different orders of spin correlation to the system trajectory. The two traces in the lower part of the figure correspond to 9‐ and 10‐spin correlations — from their negligible magnitude, it is clear that for practical simulation purposes only correlations of up to eight spins need to be kept in the basis