Saalfrank R, Deutscher C, Maid H, Ako AM, Sperner S, Nakajima T, Bauer W, Hampel F, Heß BA, van Eikema Hommes N, Puchta R, Heinemann FW (2004)
Publication Status: Published
Publication Type: Journal article
Publication year: 2004
Publisher: Wiley-VCH Verlag
Book Volume: 10
Pages Range: 1899-1905
Journal Issue: 8
In the reaction of the N-substituted diethanolamines (H2L1-3) (1-3) with calcium hydride followed by addition of iron(m) or indium(m) chloride, the iron wheels [Fe6Cl6(L-1)(6)] (4) and [Fe6Cl6(L-2)(6)] (6) or indium wheels [In6Cl6(L-1)(6)] (5), [In6Cl6(L-2)(6)] (8) and [In6Cl6(L-3)(6)] (9) were formed in excellent yields. Exchange of the chloride ions of 6 by thiocyanate ions afforded [Fe-6(SCN)(6)(L-2)(6)] (7). Whereas the structures of 4, 5 and 7 were determined unequivocally by single-crystal X-ray analyses, complexes 8 and 9 were characterised by NMR spectroscopy. Contrary to what is normally presumed, the scaffolds of six-membered metallic wheels are not generally rigid, but rather undergo nondissociative topomerisation processes. This was shown by variable temperature (VT) H-1 NMR spectroscopy for the indium wheel [In6Cl6(L-1)(6)] (5) and is highlighted for the enantiotopomerisation of one indium centre {1/6[S-6-5] reversible arrow 1/6[S-6-5']}. The self-assembly of metallic wheels, starting from diethanolamine dendrons, is an efficient strategy for the convergent synthesis of metallodendrimers.
APA:
Saalfrank, R., Deutscher, C., Maid, H., Ako, A.M., Sperner, S., Nakajima, T.,... Heinemann, F.W. (2004). Synthesis, structure, and dynamics of six-membered metallacoronands and metallodendrimers of iron and indium. Chemistry - A European Journal, 10(8), 1899-1905. https://doi.org/10.1002/chem.200306050
MLA:
Saalfrank, Rolf, et al. "Synthesis, structure, and dynamics of six-membered metallacoronands and metallodendrimers of iron and indium." Chemistry - A European Journal 10.8 (2004): 1899-1905.
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