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Citation: XU Liting, XING Na, WU Qiong, MA Xitong, XING Yongheng. Synthesis,Structure of an Iron(Ⅲ) Complex Containing N-Donor Ligand and Its Catalytic Activity for Cyclohexane Oxidation[J]. Chinese Journal of Applied Chemistry, ;2014, 31(6): 707-714. doi: 10.3724/SP.J.1095.2014.30439 shu

Synthesis,Structure of an Iron(Ⅲ) Complex Containing N-Donor Ligand and Its Catalytic Activity for Cyclohexane Oxidation

1.
College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China

Corresponding author: XING Na, XING Yongheng,
Received Date: 3 September 2013
Available Online: 6 November 2013
Fund Project: 国家自然科学基金(21071071,21371086) (21071071,21371086)国家青年科学基金(21306073) (21306073)大连市优秀青年科技人才基金(2012J21DW007) (2012J21DW007)

One novel iron complex,[Fe(H₂L)₂]·(CH₃COO)₂·(OH)·H₂O(H₂L=2,6-di-(5-methyl-1H-pyrazol-3-yl) pyridine) with N-donor ligand 2,6-di-(5-methyl-1H-pyrazol-3-yl) pyridine,was synthesized and characterized by elemental analysis,powder X-ray diffraction(PXRD) and single-crystal X-ray diffraction.In addition,the catalytic activity of the complex to cyclohexane oxidation was examined.The effects of various reaction factors such as the amount of H₂O₂,HNO₃ and water,reaction time,as well as the temperature on the formation and decomposition of cyclohexylhydroperoxide,and the yield of C₆H₁₀O and C₆H₁₁OH were evaluated.The mechanism of oxidation reaction was also discussed.It shows that H₂O₂ is the main oxidant for the oxidation of cyclohexane to C₆H₁₁OOH catalyzed by the titled Fe complex;HNO₃ has no oxidizing effect on this process,but can accelerate the formation and decomposition rates of C₆H₁₁OOH.Water has an inhibition effect on the catalytic activity,thereby lowering the formation and decomposition rates of C₆H₁₁OOH.The formation rates of C₆H₁₁OOH and C₆H₁₀O(C₆H₁₁OH) are different at different reaction stages.Higher temperature can promote the decomposition of C₆H₁₁OOH,which benefits the formation of C₆H₁₀O and C₆H₁₁OH.
- iron complex,
- di-(methyl-1H-pyrazol-yl) pyridine,
- cyclohexane oxidation,
- cyclohexylhydroperoxide,
- reaction mechanism
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