Manganese naphthalene complex

Naphthalene(tricarbonyl)manganese(I) tetrafluoroborate11 is a pale yellow solid (mp 108°C decomp.). It is best kept under inert atmosphere due to its moisture sensitivity. It dissolves readily in CH2C12 but is insoluble in ether and aromatic or aliphatic hydrocarbons. As a MTT reagent, the naphthalene complex undergoes arene substitution faster than the acenaphthene(tricarbonyl)manganese(I) analogue. 

The reactions of (arene)Cr(CO)j, (arene)Mn(CO)j and [(arene)MCp] (M = Fe or Ru) complexes have been studied extensively. Many of these arene compoimds have been prepared by heating the arene with Cr(CO)y but because dissociations of amines, nitriles or arenes from Cr(0) fragments are typically faster than dissociation of CO (see Chapter 5), reactions of arenes with Cr(CO)j(L)3 (L = NH or NCMej) or with (naphthalene) Cr(CO)j are milder than reactions with Cr(CO). Manganese-arene complexes [(arene) Mn(CO)3] - are typically generated from (CO)5MnBr, AgBF and arene, while the iron-and ruthenium-arene complexes [(arene)MCp] are typically generated by addition of arenes to [CpM(NCMe)3] (M = Fe or Ru). " ... 

The cerium(IV) oxidation of lactyllactic acid49 and of 4-oxopentanoic acid50 in aqueous nitric acid solutions shows first-order dependence of the reaction on both cerium(IV) and substrate. A 1 1 complex formation between manganese(III) and amine, which later decomposes in the rate-limiting step, best explains the kinetics of oxidation of aliphatic amines by cerium(IV) in nitric acid medium in the presence of manganese(II).51 The kinetics of oxidation of naphthalene, 2-methyhiaphthalene, and a-naphthol with cerium(IV) in perchloric acid solutions have been studied.52 Use of a 50-fold molar excess of cerium(IV) perchlorate results in complete oxidation of fluorophenols to CO2, HCO2H, and HF in 48 h at 50 °C.53... 

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