An unexpected cobalt(III) complex containing a Schiff base ligand: Synthesis, crystal structure, spectroscopic behavior, electrochemical property and SOD-like activity.
An unexpected mononuclear Co(III) complex, [Co(L2)2·(CH3COO)]·CH3OH (HL2=1-(2-{[(E)-3,5-dichloro-2-hydroxybenzylidene]amino}phenyl)ethanone oxime), has been synthesized via complexation of Co(II) acetate tetrahydrate with HL1 originally. The plausible reaction mechanism for the formation of quinazoline-type ligand was proposed. HL1 and its corresponding Co(III) complex were characterized by IR, as well as by elemental analysis and UV-vis spectroscopy. The crystal structure of the complex has been determined by single-crystal X-ray diffraction. Each complex links two other molecules into an infinite 1-D chain via intermolecular hydrogen bonding interactions. Moreover, the electrochemical properties of the cobalt(III) complex were studied by cyclic voltammetry and X-ray photoelectron spectrum (XPS). In addition, superoxide dismutase-like activities of HL1 and Co(III) complex were also investigated.
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China. Electronic address: chailanqin@163.com.
Lan-Qin
LQ
Chai
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Jiao-Jiao
JJ
Huang
Second Hospital of Lanzhou University, Lanzhou, Gansu 730030, China. Electronic address: jijiuyish@163.com.
Hong-Song
HS
Zhang
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Yu-Li
YL
Zhang
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Jian-Yu
JY
Zhang
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Yao-Xin
YX
Li
D003035:Cobalt / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D008958:Models, Molecular; D056951:Photoelectron Spectroscopy; D011799:Quinazolines / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*; D013482:Superoxide Dismutase / Q000737:chemistry
D056831:Coordination Complexes; D008024:Ligands; D011799:Quinazolines; D012545:Schiff Bases; D003035:Cobalt; D013482:Superoxide Dismutase
Crystal structure; Cyclic voltammetry; Quinazoline-type ligand; Spectroscopic behavior; Superoxide dismutase activity; X-ray photoelectron spectrum