Molecular structures of 4,13-diaza-18-crown-6 derivatives having glycyl-glycine sidearms: two potassium iodide complexes
โ Scribed by Banita D White; Frank R Fronczek; Richard D Gandour; George W Gokel
- Book ID
- 104227167
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- French
- Weight
- 195 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Solid state structures are presented for two crystalline K+ complexes of &,N'-bis(methy1 glycidylglycidino)-4,13-diaza-18-crown-6.
The two different complexzco-crystallize and both structures are fully resolved. The sidearm-K+ interactions differ in each but in both cases the proximal (amide) carbonyl participates in cation binding while the distal (ester) carbonyl does not.
๐ SIMILAR VOLUMES
The crystal structures of two modifications of 4,4ะ-dihydroxybenzophenone with 4,13-diaza-18-crown-6 have been analyzed in terms of their suitability for time-resolved diffraction studies of transient excited species in crystals. The room-temperature lifetimes of the triplet excited state of the dih