Synthesis and Characterization of Mixed-valent Binuclear Manganese Complex [(Phen)2Mn(μ-O)2Mn(Phen)2](ClO4)3·CH2ClCOOH·2H2O

Abstract

Abstract: Binuclear mixed-valent manganese complex [(Phen)₂Mn(μ-O)₂Mn(Phen)₂] (ClO₄)₃·CH₂ClCOOH·2H₂Owas synthesized by the reaction of [Mn₃O(O₂CCH₂Cl)₆(C₅H₅N)₂(H₂O)] ·CH₂ClCOO·H₂O with Phen and NaClO₄ in the CH₂ClCOOH-CH₂ClCOONa buffer (pH=4.0). X-ray diffraction result for the single crystal shows that the crystal is triclinic, space group P, with a =1.18264(7) nm, b =1.44932(8) nm, c =1.66499(9) nm, α =104.5850(10)°, β =97.1230(10)°, γ =106.9210(10)°, V =2.5816(3) nm³, Z =2, D_c=1.660 g·cm^-3, R =0.0522. Apeak at 640 nm in UV-Vis spectrum is designed to the electronic transition of bridge legend O^2- to Mn(Ⅲ). Cyclic voltammogram shows that the complex in CH₃CN undergoes two quasi reversible one electron redox reactions at E_1/2 =1.25 Vand E_1/2=0.33 V, respectively.

Key words: Binuclear mixed-valent manganese complex, Crystal structure, Synthesis, Characterization

CLC Number:

O614

TrendMD:

LI Jun, ZHANG Feng-Xing, TANG Zong-Xun, SHI Qi-Zhen . Synthesis and Characterization of Mixed-valent Binuclear Manganese Complex [(Phen)₂Mn(μ-O)₂Mn(Phen)₂](ClO₄)₃·CH₂ClCOOH·2H₂O[J]. Chem. J. Chinese Universities, 2002, 23(1): 24.

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Synthesis and Characterization of Mixed-valent Binuclear Manganese Complex [(Phen)₂Mn(μ-O)₂Mn(Phen)₂](ClO₄)₃·CH₂ClCOOH·2H₂O

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