Solvent-dependent synthesis and mono-hydrolysis of di-Schiff base of (+/-)trans-1,2-cyclohexanediamine and 2-pyridinecarboxaldehyde in Cu(II), Co(II) and Zn(II) complexes

Journal of the Serbian Chemical Society

关键词: mono-hydrolysis;    Schiff base;    solvent effect;    fluorescence;   

DOI  :  10.2298/JSC111203035L

来源: DOAJ

【 摘 要 】

The Schiff base ligand trans-N,N′-bis[2-pyridinecarboxylidene]cyclohexane-1,2-diamine (L) was synthesized. This ligand when stirred with 1equiv of MCl2.xH2O (M = Cu, Co, Zn) in ethanol, undergoes partial hydrolysisof the imino bond and the result tridentate ligand (L') and immediately formsthe complexes with N3 coordination sphere. The reactions of L with MCl2.xH2O(M = Cu, Co, Zn) in THF give complexes [ML]Cl2. The ligand (L), complexes[M(L')Cl]Cl and [ML]Cl2 were characterized by elemental analysis, UV-Vis,FT-IR, 1H NMR, GC/MS and luminescence properties. The 1H NMR spectra of theligand and its diamagnetic complexes were recorded in CDCl3 and DMSOsolvents, respectively. Obtained data confirm that the donor atoms N inligand coordinated to the metal ions. The luminescence studies show ligandsand their complexes display intraligand (π- π

【 授权许可】

Unknown