Peaks beyond 11 Å, when considered against our five-cluster model, only arise from intercluster distances in an interlinked framework [Figure ]; in our systems, these peaks, such as that at 13.2 Å, correspond to clusters joined by BDC linkers. In the BDC-containing reactions at both temperatures-, the growth of these inter-cluster peaks occurs both following, and at a slower rate than, the intra-cluster peaks. This shows that intercluster coordination occurs following, rather than simultaneously with, the cluster formation, in keeping with our previous work which suggested that the non-crystalline precursor of the framework (i.e. the cluster material) is in large excess prior to the framework coordination and growth. To further understand the behaviour of the linker-containing systems (i.e. with the potential to form a crystalline MOF framework), we also examined the reciprocal-space structure factor, F(Q) ] indicating rapid framework growth. But, after an initial increase in peak area, the rate of framework formation slows and plateaus around 18.9 minutes (likely limited by the amount of available double clusters, which does not reach a maximum until around 25.1 minutes, according to the G(r) tracking). The second stage, with fastest framework growth at c. 26.1 minutes, occurs once the double cluster peaks in the G(r) have reached their maximum (i.e. once there is significant excess of the "free" double cluster), with a higher rate, as the amount of double cluster is no longer limiting.