Ruthenium(II) complexes with pyridine-based Schiff base ligands: Synthesis, structural characterization and catalytic hydrogenation of ketones

Metal Complexes of Bis (2,6-diamine pyridine 2,5-hexanedione) Macrocyclic Schiff-Base Ligand: Preparation, Characterization and thermal study

“…The infrared results confirm the suggested coordination site and identify the main groups in the prepared compounds. The stretching IR spectrum of ligand show a strong band at (1647cm -1 ) referring to: υ(N=C) am azomethine group, and that agrees with the literature [3,16], while the pyridine ring shows the bands at (1517,1562 cm -1 ) belongs to υ(C=N) py group, and the bands (1382, 1456 cm -1 ) refer to stretching frequency of υ(C=C) py [17]. The other two bands at (3182 cm -1 ) and (2975 cm -1 ) refer to υ(C-H) ar and υ(C-H) a frequency respectively.…”

Synthesis of new Schiff bases; Investigation of their in situ catalytic activity for Suzuki CC coupling reactions and antioxidant activities

“…12-25 12-25 Besides the biological importance, the transition metal complexes, which can be obtained from σ-donor and π-acceptor Schiff bases as ligands, have wide catalytic applications in many reactions. [26][27][28][29][30] For example, Yilmaz and coworkers synthesized new palladium and ruthenium complexes of Schiff bases and these complexes showed important catalytic activity for Suzuki, Heck C C crosscoupling reactions together with catalytic hydrogenation and transfer hydrogenation reactions. [31][32][33] In addition, Alimirzaei and coworkers examined copper complexes of Schiff-bases for antimicrobial activities against grampositive and gram-negative bacteria, and obtained relatively good results.…”

“…Furthermore, anti‐bacterial, anti‐fungal, anti‐oxidant, anti‐tumor, anti‐viral, anti‐HIV, anti‐inflammatory, and anti‐proliferative properties of Schiff bases have been reported in the literature 12–25 . Besides the biological importance, the transition metal complexes, which can be obtained from σ‐donor and π‐acceptor Schiff bases as ligands, have wide catalytic applications in many reactions 26–30 . For example, Yilmaz and coworkers synthesized new palladium and ruthenium complexes of Schiff bases and these complexes showed important catalytic activity for Suzuki, Heck CC cross‐coupling reactions together with catalytic hydrogenation and transfer hydrogenation reactions 31–33 .…”

Asymmetric Schiff base ligand enables synthesis of fluorescent and near-IR emitting lanthanide compounds

“…Lanthanide(III) ions are the best ions with the largest size that are able to form stable complexes with high coordination numbers [11]. In between, lanthanide (III) complexes containing Schiff base provide a highly organized class of compounds with interesting properties such as antifungal [12], antibacterial [13], anticancer [14], catalytic [15], electroluminescence and fluorescence, sensing [16][17][18] biological activities [19], and unique magnetic properties [20].…”

“…λmax (nm) (ɛ(M − 1 cm −1 )): 232 (66,088), 276(26,977), 329 (15,051) and 400(18,422) in CH3CN. Elemental anal.…”