Synthesis and characterization of tertiaryphosphinecobalt(III) Schiff base complexes and their thermodynamic study with organic bases in different solvents

Thermodynamic study of the interaction of Co(II)-Schiff base complexes with phosphines

“…It has been suggested [24] that when cobalt ion is chelated in a macrocycle having delocalized electronic structure, the Schiff base and the axial ligands on the equilibrium constants were investigated in our laboratory, previously [16][17][18][19][20][21].…”

“…To pursue our previous work [16][17][18][19][20][21], in this paper we report the results of the thermodynamic study of the interaction of some four-coordinate Co(II)-Schiff base complexes with tributylphosphine (PBu 3 ) and diphenylmethylphosphine (PPh 2 Me) in dichloromethane.…”

Symmetrical and Unsymmetrical Schiff Bases Derived from 3,4-Diaminobenzophenone: Synthesis and Thermodynamics of Five Coordinated Tertiaryphosphine Cobalt(III) Complexes

“…[22,23] The cobalt(III) Schiff base complexes shown in Scheme 1, were prepared by the methods described in the literature. [24] To a refluxing solution of the tetradentate ligands (1 mmol), in 25 mL mixed solvent methanol / chloroform (15 / 10) under N2 atmosphere, was added a solution of Co(OAc)2 × 4H2O (0.25 g, 1 mmol) in methanol (5 mL). The brown solution is formed immediately.…”

Metallation of tetradentate N2O2 Schiff base with Mn(II), Co(II), Cu(II) and Zn(II): synthesis, characterization and formation constants measurement

“…In view of recent interest in the energetic of the metal ligand bonding in metal chelates involving N, O donor ligand, we tried to study Schiff base complexes derived from N,N'-bridged tetradentate ligands involving N 2 O 2 donor atoms [21][22][23][24][25][26][27][28]. There are some title Schiff bases and Cu(II) and Mn(III) complexes, which were previously synthesized [29][30][31][32][33] but comprehensive studies on complexation not achieved.…”