Homoleptic mono-, di-, and tetra-iron complexes featuring phosphido ligands: a synthetic, structural, and spectroscopic study - Publikacja - MOST Wiedzy

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Homoleptic mono-, di-, and tetra-iron complexes featuring phosphido ligands: a synthetic, structural, and spectroscopic study

Abstrakt

We report the first series of homoleptic phosphido iron complexes synthesized by treating either the β-diketiminato complex [(Dippnacnac)FeCl2Li(dme)2] (Dippnacnac = HC[(CMe)N(C6H3-2,6-iPr2)]2) or [FeBr2(thf )2] with an excess of phosphides R2PLi (R = tBu, tBuPh, Cy, iPr). Reaction outcomes depend strongly on the bulkiness of the phosphido ligands. The use of tBu2PLi precursor led to an anionic diiron complex 1 encompassing a planar Fe2P2 core with two bridging and two terminal phosphido ligands. An analogous reaction employing less sterically demanding phosphides, tBuPhPLi and Cy2PLi yielded diiron anionic complexes 2 and 3, respectively, featuring a short Fe–Fe interaction supported by three bridging phosphido groups and one additional terminal R2P− ligand at each iron center. Further tuning of the P-substrates bulkiness gave a neutral phosphido complex 4 possessing a tetrahedral Fe4 cluster core held together by six bridging iPr2P moieties. Moreover, we also describe the first homoleptic phosphanylphosphido iron complex 5, which features an iron center with low coordination provided by three tBu2P-P(SiMe3)− ligands. The structures of compounds 1–5 were determined by single-crystal X-ray diffraction and 1–3 by 1H NMR spectroscopy. Moreover, the electronic structures of 1–3 were interrogated using zero-field Mössbauer spectroscopy and DFT methods.

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Wersja publikacji
Accepted albo Published Version
Licencja
Copyright (2020 The Royal Society of Chemistry)

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
DALTON TRANSACTIONS nr 49, strony 10091 - 10103,
ISSN: 1477-9226
Język:
angielski
Rok wydania:
2020
Opis bibliograficzny:
Kaniewska K., Ponikiewski Ł., Szynkiewicz N., Cieślik B., Pikies J., Krzystek J., Dragulescu-Andrasi A., Stoian S., Grubba R.: Homoleptic mono-, di-, and tetra-iron complexes featuring phosphido ligands: a synthetic, structural, and spectroscopic study// DALTON TRANSACTIONS -Vol. 49,iss. 29 (2020), s.10091-10103
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1039/d0dt01503b
Źródła finansowania:
Weryfikacja:
Politechnika Gdańska

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