Easy and Quantitative Access to Fe(II) and Fe(III) Diarylalkynyl-phosphine Oxides Featuring [Fe(dppe)Cp*] Endgroups: Terminal P=O Functionality Blocks the Dimerisation of the Fe(III) Derivatives - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Chemical Communications Année : 2015

Easy and Quantitative Access to Fe(II) and Fe(III) Diarylalkynyl-phosphine Oxides Featuring [Fe(dppe)Cp*] Endgroups: Terminal P=O Functionality Blocks the Dimerisation of the Fe(III) Derivatives

Résumé

A series of paramagnetic di(aryl)alkynylphosphine oxides [PF6] featuring an open-shell [Fe(κ(2)-dppe)(η(5)-C5Me5)](+) endgroup were obtained by oxidation of their neutral Fe(II) parents 3a-c, themselves obtained in a simple and nearly quantitative fashion from the corresponding Fe(II) metallophosphines 1a-c. The new organometallic radicals were characterised by NMR and ESR and were shown to be perfectly stable in solution, in contrast to species such as 1a-b[PF6] which readily dimerise.

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Chimie
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hal-01134565 , version 1 (13-04-2015)

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Ayham Tohmé, Stéphanie Essafi, Arnaud Bondon, Thierry Roisnel, Duncan Carmichael, et al.. Easy and Quantitative Access to Fe(II) and Fe(III) Diarylalkynyl-phosphine Oxides Featuring [Fe(dppe)Cp*] Endgroups: Terminal P=O Functionality Blocks the Dimerisation of the Fe(III) Derivatives. Chemical Communications, 2015, 51 (7), pp.1316-1319. ⟨10.1039/c4cc08993f⟩. ⟨hal-01134565⟩
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