Pyridazine‐Based Ligands and Their Coordinating Ability towards First‐Row Transition Metals

Abstract

Tridentate pyridazine ligands with two different substituents at the 3-and 6-positions (pyridyl hydrazone at the 3-position and tolyl 3 tol or tert-butyl 3 tBu at the 6-position) were prepared in high yields from 3,6-disubstituted pyridazine hydrazines and pyridine aldehyde by Schiff base condensation. This provides a facile entry into a novel class of heterocyclic molecules exhibiting interesting coordinating abilities. They react with first-row transition metal nitrates to yield complexes of the type [ tol form complexes of the ML 2 type, whereas with ligand 3 tBu exclusively complexes of the ML type are formed,

Biologically Important Schiff Bases and Their Transition Metal Complexes

“…Schiff bases behave as chelating ligands in coordination chemistry [20]. They are also used in catalysis, anti-oxidative activity and as medicines [21].…”

Synthesis, characterization and antibacterial activity studies of new 2-pyrral-L-amino acid Schiff base palladium (II) complexes

“…These compounds are, thus, suitable drug candidates. Amino acid Schiff bases are specifically very effective chelating ligands bearing carboxylate, COO-and azomethine -C = N-groups which readily coordinate to various transition metal ions, forming chemically and thermally stable metal complexes (Grünwald et al 2010)_ENREF_9. The formation of palladium chelates through the use of amino acid Schiff bases is likely to enhance their stability and improve their structural lability.…”

Study on the nematicidal activity and chemical structure of NO bidentate Schiff base some metal complexes

“…Various metal carbonyl derivatives play an important role in homogeneous catalysis involving hydrogenation, hydroformylation, carbonylation, and oxo transfer reactions . Also, used in catalysis, as antoxidatives, in medicine as antibiotics, anti‐inflammatory agents, and in industry for anticorrosion properties, chemo sensors, and adsorbents . The present work oriented to synthesize some compounds having nematicidal activity and evaluate their activity on M. javanica .…”