Synthesis and Structure of Cyclometallated Palladium Binuclear Complexes with Bridging Carboxylate Ligands

New bimetallic pivalate Pd(II) complex [PdNi(OOC t Bu) 4 (HOOC t Bu)] ( I ) has been synthesized from [PdNi(OOCMe) 4 ] and used as a starting reagent in a further complexation reaction. Cyclometallated binuclear carboxylate palladium complexes [(OOCMe)Pd(2‑phpy)] 2 ( II ) and [(OOC t Bu)Pd(2‑phpy)] 2 ( III ) have been obtained by the reaction between heterometallic compounds [Pd(OOCR) 4 Ni] (R = Me, t Bu) and 2-phenylpyridine (2-phpy). The reaction proceeds at room temperature under mild conditions. All the compounds obtained have been isolated in crystalline form from a medium of nonpolar solvents, characterized by single-crystal X-ray diffraction analysis, and deposited at the Cambridge Crystallographic Data Center (CCDC nos. 2256606 for I , 2247942 for II , and 2247943 for III ).