2007
DOI: 10.1002/ange.200700059
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An Isolable and Monomeric Phosphorus Radical That Is Resonance‐Stabilized by the Vanadium(IV/V) Redox Couple

Abstract: Unterstützung für ein Radikal: Das neutrale Radikal [.P{NV[N(Np)Ar]3}2] (Np=Neopentyl, Ar=3,5‐Me2C6H3) ist durch zwei Nitridovanadiumtrisanilid‐Liganden über einen VIV/VV‐Redoxzyklus resonanzstabilisiert (siehe EPR‐Spektrum und berechnetes SOMO für [.P{NV[N(Me)Ph]3}2]). Die Verbindung liegt im Festkörper als Monomer vor und geht durch radikalische Reaktionen am Phosphorzentrum in diamagnetische Produkte über.

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Cited by 29 publications
(2 citation statements)
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“…Modeling these, as well as the anisotropic 100 K spectra, suggests that the single unpaired electron is minimally delocalized and rests primarily at the V center (Figures S10−13). 43,44 The formal transfer of TMS • from TMS 2 -pyz to 2 generating 3 represents what we believe is the clearest example yet of reactivity at a terminal P V O bond mimicking the proposed ROA/PCET mechanism (Scheme 1). We next wanted to probe the mechanism of this transformation.…”
Section: ■ Results and Discussionmentioning
confidence: 65%
“…Modeling these, as well as the anisotropic 100 K spectra, suggests that the single unpaired electron is minimally delocalized and rests primarily at the V center (Figures S10−13). 43,44 The formal transfer of TMS • from TMS 2 -pyz to 2 generating 3 represents what we believe is the clearest example yet of reactivity at a terminal P V O bond mimicking the proposed ROA/PCET mechanism (Scheme 1). We next wanted to probe the mechanism of this transformation.…”
Section: ■ Results and Discussionmentioning
confidence: 65%
“…Cummins and co-workers (2007) reported a phosphorus radical (12) using nitridovanadium trisanilide metallo ligands that exists as a monomer even in the solid-state (Scheme 6). 40 The extraordinary stability of 12 is mainly due to spin delocalization onto a pair of nitridovanadium metallo ligands (Scheme 6). A transition metal system was used as a ligand for the stabilization of the phosphorus radical instead of using a heavier main group metal, because the former displays oneelectron redox chemistry efficiently, whereas the latter is more limited toward electron pair chemistry.…”
Section: Perspective Dalton Transactionsmentioning
confidence: 99%