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- Title
N-Heterocyclic germylenes and stannylenes of the type [Fe{(η<sup>5</sup>-C<sub>5</sub>H<sub>4</sub>)NR}<sub>2</sub>E] with bulky alkyl substituents.
- Authors
Volk, Julia; Bruno A. Correia Bicho; Bruhn, Clemens; Siemeling, Ulrich
- Abstract
The 1,1'-diaminoferrocene derivatives [Fe(η5- C5H4-NHAd)2] (Ad = 2-adamantyl) and [Fe(η5-C5H4- NHtBu)2] were investigated in terms of their suitability for the synthesis of N-heterocyclic tetrylenes of the type [{Fe(η5-C5H4)NR)2}E] (E = Ge, Sn). The synthesis of these target compounds was easily achieved with R = tBu, but failed with R = Ad. In the latter case, the stannylene was not sufficiently stable for isolation and decomposed to the aminoiminoferrocene derivative [Fe(η5-C5H4-NHAd) (η5-C5H4-N = Ad')] (Ad' = adamant-2-ylidene). Attempts to synthesise [{Fe(η5-C5H4-NAd)2}Ge] afforded intractable material, from which the unusual compound [μ2-{Fe(η5-C5H4-NAd)2}Ge2(μ3-O)(GeCl2)] was obtained by serendipity. It contains GeO, stabilised by adduct formation with GeCl2 and the target germylene. [Fe(η5-C5H4-NHtBu)2], [Fe(η5-C5H4-NHAd)2], [Fe(η5-C5H4-NHAd)(η5-C5H4-N = Ad')], [μ2-{Fe(η5-C5H4-NAd)2}Ge2(μ3-O)(GeCl2)] and [{Fe(η5-C5H4- NtBu)2}E] (E = Ge, Sn) were structurally characterised by single-crystal X-ray diffraction.
- Subjects
GERMYLENES; CHEMICAL synthesis; X-ray diffraction; SINGLE crystals; CHEMICAL derivatives
- Publication
Zeitschrift für Naturforschung B: A Journal of Chemical Sciences, 2017, Vol 72, Issue 11, p785
- ISSN
0932-0776
- Publication type
Article
- DOI
10.1515/znb-2017-0085