Synthesis and characterization of N,N′-bis(o-vanillyidene)-2,6-pyridinediamine (H2L) Schiff base complexes
BAI Hong-jun, XING Fu-gang, WANG Zeng-lin*
(Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; College of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
Three coordination compounds of transition elements(Cu, Ni and Co) with N,N＇-bis(o-vanillyidene)-2,6-pyridinediamine (H2L) were prepared in presence of methanol. The complexes have been characterized by elemental analysis and thermogravimetris analysis. Compositions of these complexes were confirmed to be CuL·5H2O, NiL·5H2O and CoL·2H2O. IR spectra and UV spectra of the complexes are described. The results show that two phenolic oxygen and two imino nitrogen atoms in H2L coordinate to M(Ⅱ) ions. The cyclic voltametric behaviors of the complexes were also reported.
KeyWords:
o-vanillyidene; 2,6-pyridinediamine; Schiff base complexes; electrochemical property
