✦ LIBER ✦
Erste röntgenographische CharakterisierungN-lithiierter 4-Alkyliden-1,4-dihydropyridine des Typs [{4-(CH3CR)C5H4N}Li(TMEDA)]2: Vergleich von Kristall- und MNDO-Strukturdaten sowie Untersuchungen zur Lithium-Koordination in Lösung
✍ Scribed by Anders, Ernst ;Opitz, Andreas ;Boese, Roland
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1992
- Tongue
- English
- Weight
- 539 KB
- Volume
- 125
- Category
- Article
- ISSN
- 0009-2940
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✦ Synopsis
The First X-ray Structures of N-Lithiated 4-Alkylidene-1,4-dihydropyridines [{ 4-(CH3CR)C5H,N)Li(TMEDA)l2: Comparison of the X-ray and MNDO Geometries and Investigation of Lithium Coordination in Solution The 4-ethyl-and -isopropylpyridines 5a and b were trans-pare quite well with the X-ray structure of 6a. The lithium formed into the lithiated compounds [{4-(CH3CH)C5H4N)-atom of 6a in solution prefers the same type of coordination Li(TMEDA)], (6a) and [{4-(CH3CCH3)C5H,N)Li(TMEDA)J2 as in the crystal: Two-dimensional 'Li,lH-HOESY showed Li