Self-assembly of tetrahedral and trigonal antiprismatic clusters [Fe4(L4)4] and [Fe6(L5)6] on the basis of trigonal tris-bidentate chelators

Rolf W. Saalfrank*, Horst Glaser, Bernhard Demleitner, Frank Hampel, Mubarik M. Chowdhry, Volker Schünemann, Alfred X. Trautwein, Gavin B.M. Vaughan, Robert Yeh, Anna V. Davis, Kenneth N. Raymond

*Korrespondierende/r Autor/-in für diese Arbeit
91 Zitate (Scopus)

Abstract

In a one-pot reaction, the tetranuclear iron chelate complex [Fe4(C4)4] 6 was generated from benzene-1,3,5-tricarboxylic acid trichloride (4), bis-tert-butyl malonate (5a), methyllithium, and iron(II) dichloride under aerobic conditions. Alternatively, hexanuclear iron chelate complex. [Fe6(L5)6] 7 was formed starting from bis-para-tolyl malonate (5b) by employing identical reaction conditions to those applied for the synthesis of 6. The clusters 6 and 7 are present as racemic mixtures of homoconfigurational (Δ,Δ,Δ,Δ)/(Λ,Λ,Λ,Λ)-fac or (Δ,Δ,Δ,Δ,Δ,Δ)/ (Λ,Λ,Λ,Λ,Λ,Λ)-fac stereoisomers. The structures of 6 and 7 were unequivocally resolved by single-crystal X-ray analyses. The all-iron(III) character of 6 and 7 was determined by Mössbauer spectroscopy.

OriginalspracheEnglisch
ZeitschriftChemistry - A European Journal
Jahrgang8
Ausgabenummer2
Seiten (von - bis)493-497
Seitenumfang5
ISSN0947-6539
DOIs
PublikationsstatusVeröffentlicht - 18.01.2002

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