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Spontaneous resolution of a bis(η 1-methylcyclopentadienyl)zinc complex
- Source :
-
Inorganica Chimica Acta . Nov2011, Vol. 377 Issue 1, p181-184. 4p. - Publication Year :
- 2011
-
Abstract
- Abstract: Two crystalline complexes of bis(η 1-methylcyclopentadienyl)zinc, [Zn(C5H4Me)2(py)2] (1), where py is pyridine, and [Zn(C5H4Me)2(teeda)], 2, where teeda is N,N,N′,N′-tetraethylethylenediamine have been isolated. The crystal structures of 1 and 2 are the first crystal structures for Zn(C5H4Me)2 complexes reported in the literature; both structures display η 1-coordination of the methylcyclopentadienyl ring to zinc, and both compounds display chirogenic α-carbon atoms. While 1 forms racemic crystals, 2 undergoes spontaneous resolution and crystals of 2 are thus enantiomerically pure. 1H NMR showed that Zn(C5H4Me)2 is stereochemically labile in solution with only one signal for the Cp-protons. This fact opens up the possibility for total spontaneous resolution and absolute asymmetric synthesis. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00201693
- Volume :
- 377
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Inorganica Chimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 66569244
- Full Text :
- https://doi.org/10.1016/j.ica.2011.08.019