On photolysis cis-[MH2(DMPE)2] (M = Fe, Ru; Os; DMPE = Me2PCH2CH2PMe2) and cis-[MH2(DPPE)2] (M = Fe, Ru, Os; DPPE = Ph2PCH2CH2PPh2) readily lose H2 by concerted coupling of the two hydrogen atoms. The photoreactions generate the extremely reactive intermediates [M(DMPE)2] and [M(DPPE)2] which react with tetracyanoethylene (TCNE) to form metal(II) complexes: [C2(CN)3M(DMPE)2CN], [C2(CN)3M(DPPE)2CN] via free-radical oxidative addition processes. The reactive species may be trapped to give zerovalent compounds upon irradiation of the title compounds in the presence of Lewis ligand L (e.g. [LM(DMPE)2], [LM(DPPE)2];L = CO, C2H4). © 1986.
Photochemistry of phosphine hydride complexes of iron group metals
BERGAMINI, Paola;SOSTERO, Silvana;TRAVERSO, Orazio
1986
Abstract
On photolysis cis-[MH2(DMPE)2] (M = Fe, Ru; Os; DMPE = Me2PCH2CH2PMe2) and cis-[MH2(DPPE)2] (M = Fe, Ru, Os; DPPE = Ph2PCH2CH2PPh2) readily lose H2 by concerted coupling of the two hydrogen atoms. The photoreactions generate the extremely reactive intermediates [M(DMPE)2] and [M(DPPE)2] which react with tetracyanoethylene (TCNE) to form metal(II) complexes: [C2(CN)3M(DMPE)2CN], [C2(CN)3M(DPPE)2CN] via free-radical oxidative addition processes. The reactive species may be trapped to give zerovalent compounds upon irradiation of the title compounds in the presence of Lewis ligand L (e.g. [LM(DMPE)2], [LM(DPPE)2];L = CO, C2H4). © 1986.File in questo prodotto:
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