To achieve a well-defined bimetallic platform with varying sterics to study polymerization, we used binucleating ligands consisting of a phenol and two variable bis(pyrazolyl)alkane arms (PD R H, 2-R and 4, Scheme 1A). Our laboratory introduced the ligands PD R H (2-R; -R = -H, -Me2, -Ph, -iPr) in 2022. We prepared these ligands by a nucleophile-catalyzed condensation between the corresponding dialdehyde and bis(pyrazolyl)methanone (3-R), following a method that we had previously reported and have since used to prepare complementary binucleating bis(pyrazolyl)alkanes. This report introduces the binucleating ligands PD Et2 H (2-Et2) and PD 4- tBu H (4) as well as the mononucleating ligand P 4-tBu H (5), all prepared by nucleophile-catalyzed condensation.