𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Conformers and Rotamers of (±)-trans-2,3-Bis(2-naphthyl)-15-crown-5 and -18-crown-6 and Their Alkali Metal Complexes

✍ Scribed by A. Merz; L. Gromann; A. Karl; L. Parkanyi; O. Schneider


Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
571 KB
Volume
1998
Category
Article
ISSN
1434-193X

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Conformations and Rotational Barriers of
✍ Merz, Andreas ;Gromann, Lutz ;Karl, Andreas ;Burgemeister, T. ;Kastner, F. 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 514 KB

## Abstract The synthesis of 2,3‐didehydro[15]crown‐5 and −[18]crown‐6 derivatives 4a, b with vicinal α‐naphthyl groups at the double bonds starting from α‐naphthoin (3) is described. The barriers to rotation of the naphthyl groups were probed by MM2 and by dynamic ^1^H‐NMR spectroscopy. An achiral

Molecular dynamics of 18-crown-6 complex
✍ E.T.H. Leuwerink; S. Harkema; W.J. Briels; D. Feil 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 642 KB

## Abstract Complexes of 18‐crown‐6 with alkali–metal cations (Na^+^, K^+^, and Rb^+^), urea, and the uncomplexed crown ether were studied __in vacuo__ with the molecular dynamics method. Conformational data from these calculations (simulation times in the range from 6–15 ns) was compared with info