Hybrid (Te, N) and (N, Te, N) ligands having pyrrolidine ring and their palladium(II) and mercury(II) complexes: synthesis and crystal structures

Half sandwich complexes of Ru(II) and complexes of Pd(II) and Pt(II) with seleno and thio derivatives of pyrrolidine: Synthesis, structure and applications as catalysts for organic reactions

“…The L3 is unstable and therefore its complexes of good purity could not be isolated. On contrary its tellurium analoge is stable [30]. All the ligands were found soluble in common organic solvents.…”

“…We are unaware of any half sandwich complex of ruthenium(II) of piano stool geometry that has L1 or any other (Se, N) ligand. The tellurium analog of L1 is known [30] but its structurally characterized half sandwich complex is unknown so far. Therefore, such complexes having (g 6 -p-cymene)Ru(II) or (g 6 -benzene)Ru(II) unit and L1/L2 have been studied.…”

Tellurated heterocycles, 2-[(2-thienyltelluro)methyl]tetrahydrofuran (L1) and [(2-thienyltelluro)methyl]tetrahydro-2H-pyran (L2): Synthesis and complexation reactions with Pd(II), Pt(II), Hg(II), Ru(II) and Cu(I)

“…Tellurium containing derivatives of heterocycles have been designed and used as ligands but in most of the asymmetric telluride ligands [RR 0 Te], having heterocyclic group [7][8][9][10][11][12][13][14][15][16] the other group is phenyl (or its substituted derivative). Some symmetric telluride ligands [R 2 Te] are also known in which two heterocyclic groups (R) are identical [13][14][15][16]. No telluride in which both heterocyclic groups are different, has been explored as a ligand so far.…”

Metal-metalloid bond containing complexes of the bulky organotellurium ligand: applications in catalysis of C–O coupling and aldehyde to amide transformation reactions

“…When tellurium is there in bivalent state in organic molecules, it has a tendency to act as a donor site. Due to this tendency, such organic molecules react with a variety of metals (Cd, Sb, Pd, Pt, Ru, Bi, Rh and Ir) 19,25–32 and yield coordination compounds. Organotellurium compounds are promising in glutathione peroxidase mimics, 33 antioxidant activity 34 and thioredoxin reductase inhibition.…”