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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A Mn(iv)-peroxo complex in the reactions with proton donors
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A Mn(iv)-peroxo complex in the reactions with proton donors

机译:与质子供体的反应中的Mn(iv) - 癸酸复合物

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Protons play an important role in promoting O-O or M-O bond cleavage of metal-peroxo complexes. Treatment of side-on O-2-bound [PPN][Mn-IV((TMS)PS3)(O-2)] (1, PPN = bis(triphenylphosphine)iminium and (TMS)PS3H(3) = 2,2,2-trimercapto-3,3,3-tris(trimethylsilyl)triphenylphosphine) with perchloric acid (HClO4) in the presence of PR3 (R = phenyl or p-tolyl) results in the formation of neutral five-coordinate Mn-III(OPR3)((TMS)PS3) complexes (R = phenyl, 2a; p-tolyl, 2b), which are confirmed by X-ray crystallography. Isotope labelling experiments demonstrate that the oxygen atom in the phosphine oxide product derives from the peroxo ligand of 1. Reactions of 1 with weak proton donors, such as phenylthiol, phenol, substituted phenol and methanol, are also investigated to explore the reactivity of the Mn-IV-peroxo complex, leading to the isolation of a series of five-coordinate [Mn-III(L)((TMS)PS3)](-) complexes (L = phenylthiolate, phenolate or methoxide). Mechanistic aspects of the reactions of the Mn-IV-peroxo complex with proton donors are discussed as well.
机译:质子在促进金属 - 过氧络合物的O-O或M-O键裂解方面发挥着重要作用。侧面对O-2结合的[PPN] [Mn-IV((TMS)PS3)(O-2)](1,PPN =双(三苯基膦)亚胺和(TMS)PS3H(3)= 2, 2,2-三胞嘧啶-3,3,3-三(三甲基甲硅烷基)三苯基膦)在PR3(R =苯基或对甲苯基)存在下具有高氯酸(HCLO4)导致中性五坐标MN​​-III的形成(OPR3)((TMS)PS3)配合物(R =苯基,2A;对甲苯基,2B),其通过X射线晶体学证实。同位素标记实验表明,膦氧化膦产物中的氧原子衍生出1.含有弱质子供体的1的过氧腈配体,例如苯硫醇,苯酚,取代的苯酚和甲醇,也研究了探讨了Mn的反应性-iv-peroxo复合物,导致分离一系列五坐标[Mn-III(1)((TMS)pS3)]( - )配合物(L =苯硫酸盐,酚醛酸或甲醇)。讨论了与质子供体的Mn-IV-Peroxo复合物反应的机械方面。

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