Studies on Solid State Synthesis and Oxygenation Property of Cobalt(II) Schiff Base (Vanilline Polyamine) Complexes

Abstract

Three new cobalt(II) Schiff base complexes were synthesized by solid state reaction at room temperature. It was found that each Co complex could react with two equiv. of oxygen at room temperature. And the oxygenated complexes [Co•(L₁)₂•(O₂)₂](NO₃)₂•2H₂O (L₁＝N,N-bis(4-hydroxy-3-methoxybenzyl)- diethylenetriamine), [Co•(L₂)₂•(O₂)₂](NO₃)₂•2H₂O (L₂＝N,N-bis(4-hydroxy-3-methoxybenzyl)triethylene- tetramine) and [Co•(L₃)₂•(O₂)₂](NO₃)₂•2H₂O (L₃＝N,N-bis(4-hydroxy-3-methoxybenzyl)tetraethylene- pentamine) were obtained and characterized by elemental analysis, IR spectra, ¹H NMR, TG/DTA, molar conductance and UV-Vis measurement. The coordinated oxygen contents in the oxygenated complex were also determined by mass loss method. It was found that one O₂ molecule coordinated to the Co ion and formed superoxo type oxygenated complex.

Key words: solid state reaction, oxygen carrier, Schiff base, cobalt, oxygenation property

Cite this article

XIAO Fu-Rong^1,2, CHEN Lu, WANG Ji-De*^,1, WU Rong-Lan
YUE Fan, LI Jing. Studies on Solid State Synthesis and Oxygenation Property of Cobalt(II) Schiff Base (Vanilline Polyamine) Complexes[J]. Acta Chimica Sinica, 2006, 64(15): 1517-1522.

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香草醛缩多胺Schiff碱Co(II)配合物固相合成及氧合性能研究