[en] This Grade Final Project is dedicated to study the synthesis and characterization of ruthenium and palladium complexes with ligands hydrazine, which have been prepared simply by condensation reactions of salicylaldehyde or 2-acetylpyridine and 1-methyl-1-phenylhydrazine to give potentially tridentate ligands [C,N,O] and [C, N, N], respectively . The reaction of the hydrazone [C,N,O] with palladium(II) acetate in toluene yielded a cyclometallated complex in which the ligand acts as a tridentate in a tetranuclear structure with bridging phenolic oxygen atoms. However, the reaction of hydrazone [C, N, N] with palladium acetate, under similar conditions, yielded a mononuclear complex in which the ligand also serves as tridentate, in this case [C,N,N], and a acetate ligand is coordinated to the metal centre. The reaction with lithium tetrachloropalladate yielded a similar complex with the hydrazone acting as a [C,N,N] ligand, and a chloro ligand complete the atom environment planocuadrado palladium. These compounds belong to the category of cyclometallated organometallic compounds, characterized by the formation of a chelate ring containing a Pd-C bond. However, the reaction of the [C,N,O] ligand with [RuCl(-Cl)(p-Cymeno)]2 gave no cyclometallated complex, but a coordination compounds in which the ligand acts as bidentate [N, O]; the coordination sphere around ruthenium atom is completed with the p-cymene ligand acting as a hexahapto ligand and a chloro ligand. All compounds were characterized using appropriate techniques IR, 1H and 13C-{1H} and mass spectrometry.

[gl] O presente traballo de Fin de Grado está dedicado ao estudo da síntese e caracterización de complexos de rutenio e paladio con ligandos hidrazona. Devanditos ligandos preparáronse de forma sinxela mediante reaccións de condensación de salicilaldehido ou 2-acetilpiridina con 1-metil-1-fenilhidracina, para dar ligandos potencialmente tridentados [C,N,O] o [C,N,N], respectivamente. A reacción da hidrazona [C,N,O] con acetato de paladio(II) en tolueno deu lugar a obtención dun complexo ciclometalado no que o ligando actúa coma tridentado, cunha estrutura tetranuclear mediante a formación de pontes a través do átomo de osíxeno fenólico desprotonado. Sen embargo, cando se fixo reaccionar a hidrazona [C,N,N] con acetato de paladio, en condicions similares, obtívose un complexo no que o ligando tamén actúa coma tridentado, neste caso [C,N,N], pero de estrutura mononuclear e cun ligando acetato terminal no átomo metálico. A reacción deste último ligando con tetracloropaladato de litio permitiu obter un composto similar coa hidrazona con ligandos [C,N,N], pero no cal o ligando cloro completa o entorno planocadrado do átomo de paladio. Estos compostos pertencen á categoría de compostos organometálicos ciclometalados, caracterizados pola formación dun anel quelato que contén un enlace Pd-C. Sen embargo, a reacción do ligando [C,N,O] con [RuCl(-Cl)(p-Cymeno)]2 non deu lugar a un complexo ciclometalado, senon un composto de coordinación no que o ligando actúa coma bidentado [N,O]; a esfera de coordinación do átomo de Ru(II) completouse co p-cymeno actuando como ligando hexahapto e un ligando cloro. Todos os compostos foron adecuadamente caracterizados empregando as técnicas de IR, RMN de 1H y 13C-{1H} e espectrometría de masas.