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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Iodination of triazenide-bridged rhodium and iridium complexes: oxidative addition vs. one-electron oxidation
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Iodination of triazenide-bridged rhodium and iridium complexes: oxidative addition vs. one-electron oxidation

机译:三叠氮化物桥接的铑和铱配合物的碘化:氧化加成与单电子氧化

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摘要

The triazenide-bridged tetracarbonyls [(OC)(2)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)M(CO)(2)] (M = Rh or Ir) undergo oxidative addition of iodine across the dimetal centre, giving the [RhM](4+) complexes [I(OC)(2)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)M(CO)(2)I], structurally characterised for M = Ir. The anionic tricarbonyl iodide [I(OC)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)Rh(CO)(2)](-) forms [I-2(OC) Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)Rh(CO)I]-by initial one-electron transfer whereas the analogous tricarbonyl phosphine complexes [(OC)(Ph3P) Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)M(CO)(2)] (M = Rh or Ir) undergo bridge cleavage, giving mononuclear [Rh(p-MeC6H4NNNC6H4Me-p)I-2(CO)(PPh3)] and dimeric [I(OC){RNNN(R)C(O)}M(mu-I)(2)M{C(O)N(R)NNR}(CO)I] (M = Rh or Ir, R = C6H4Me-p) in which CO has been inserted into a metal-nitrogen bond.
机译:三叠氮化物桥联的四羰基化合物[(OC)(2)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)M(CO)(2)](M = Rh或Ir)跨双金属中心经历碘的氧化加成,得到[RhM](4+)配合物[I(OC)(2)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)M(CO)(2)I],结构特征为M = Ir。阴离子三羰基碘化物[I(OC)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)Rh(CO)(2)](-)形成[I-2(OC)Rh(mu-p-MeC6H4NNNC6H4Me-p )(2)Rh(CO)I]-通过初始单电子转移而类似的三羰基膦配合物[(OC)(Ph3P)Rh(mu-p-MeC6H4NNNC6H4Me-p)(2)M(CO)(2) ](M = Rh或Ir)进行桥裂解,得到单核[Rh(p-MeC6H4NNNC6H4Me-p)I-2(CO)(PPh3)]和二聚体[I(OC){RNNN(R)C(O)}} M(mu-I)(2)M {C(O)N(R)NNR}(CO)I](M = Rh或Ir,R = C6H4Me-p),其中CO已插入金属氮中键。

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