The last globally stable extended alkane
2013-01-02 | journal article; research paper. A publication of Göttingen
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- Luettschwager, Nils O. B. ; Wassermann, Tobias N.; Mata, Ricardo A. ; Suhm, Martin A.
- Mother of all folding: cold isolated linear alkanes C(n)H(2n+2) prefer an extended all-trans conformation before cohesive forces between the chain ends induce a folded hairpin structure for longer chains. It is shown by Raman spectroscopy at 100-150 K that the folded structure becomes more stable beyond n(C) = 17 or 18 carbon atoms. High-level quantum-chemical calculations yield n(C) = 17 ± 1 as the critical chain length.
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- Angewandte Chemie. International Edition