Crystal Structure of Triisopropylidenecyclopropane
β Scribed by Dr. H. Dietrich; H. Dierks
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- English
- Weight
- 127 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
**The first single crystals of As~2~O~5~** have now been obtained by annealing amorphous As~2~O~5~ under oxygen excess pressure and with careful exclusion of moisture. They were suitable for Xβray structure analysis.
**NO** **is the βsmallestβ tetrahedral oxoanion so far**, as shown by Xβray structure analysis of painstakingly group (240 d) single crystals of Na~3~NO~4~. The Nο£ΏO distances (139 pm) are shorter than expected (__ca.__ 150 pm); the shortening can only be due to polar interactions superimposed on the
cis-helix. The differing strength of the bonding between solvent and peptide carbonyl groups could be determined from small differences in the T values of the C,-H resonances (CF,COOD: 5.10ppm; CD,COOD: 5.19ppm; DzO: 5.24ppm; CF3CD20D: 5.26ppm; C D 3 0 D : 5.31 ppm). In CD,COOD and CF3COOD all oligo