In addition to the structural differences, we also observe several chemical differences between the datasets. Here, we employ revised autocorrelations (RACs, see Sec. 2), to understand the chemical diversity of the K-C2 dataset. We observe differences in some of the RAC features related to the secondary building unit (SBU) coordination environment, which suggests differences in the broader chemical space covered by the two datasets. The RAC feature 𝑇 ! " #$$ %& is the sum of differences in the number of bonded atoms between the metal atom and the surrounding atoms that are one bond away. This RAC can be thought of as a measure of the structural complexity of the SBU. The distribution of this RAC is shifted down in the K-C2 dataset relative to CoRE MOF.