In the crystal structure of the title compound, C 18 H 17 N 3 O 2 , the imidazoline ring has a very flattened envelope conformation, with a twisted endocyclic C N double bond.
Photochemically induced [4+2]- versus [3+2]-cycloreversion reaction of hexasubstituted 2,3-diaza-bicyclo[3.1.0]hex-2-enes
✍ Scribed by Günter Ege; Karlheinz Gilbert; Birgit Hahn
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- French
- Weight
- 202 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0040-4039
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Table 1. Selected physical properties of ( 5 a ) and (56) "C-NMR (in CDCl3, T M S internal) c-1 109.2 C-CN 97.4, 98.9, 102.0 c-4 108.9 c -5 c-1 ' 124.5 c -2 , c-3' 131.1 IR ( K B r ) [cm-'1 C=N 2210 Cyclopropene [5] 1898, 1550 UV(CH3CN) [ n m l (log&) 240 (4.61), 278 (4.23) 'H-NMR (100 MHz, CDClj, T
Single-crystal X-ray study T = 173 K Mean () = 0.000 A Disorder in main residue R factor = 0.059 wR factor = 0.141 Data-to-parameter ratio = 166.7 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.