The composition distribution of the ligands in the obtained products differed from the binomial distribution predicted from the molar ratio of ligands added during synthesis (Fig. , Table ). This result indicates that there is a difference in the ligand exchange ability between the two types of acetylide ligands used in this study. The observed deviation suggests that C2PhTpy is more likely to replace the Cl -ligand of Au13 cluster than PA. C2PhTpy has a bulkier geometric structure than PA (Fig. ). Regardless, C2PhTpy is more easily introduced into the Au13 cluster than PA, which is Please do not adjust margins