Sodium-ion-induced 1H-n.m.r. shifts in the assignment of structure to r-2-ethyl-5-methyl-c- and -t-5-(2-methylbenzyloxy)-1,3-dioxane
โ Scribed by Ewan J.T. Chrystal; Alan H. Haines; Rajnikant Patel
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 374 KB
- Volume
- 186
- Category
- Article
- ISSN
- 0008-6215
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๐ SIMILAR VOLUMES
Reaction of A 2 CO 3 (A = K, Rb) with Sn and Se in an H 2 O/CH 3 OH mixture at 115ยฑ130 ยฐC affords the isotypic selenidostannates(IV) A 6 Sn 4 Se 11 ยดx H 2 O (A = K, x = 8) 1 and 2 whose discrete [Sn 4 Se 11 ] 6ยฑ anions each contain two corner-bridged ditetrahedral [Sn 2 Se 6 ] 4ยฑ species. Similar re
X-ray crystallographic analyses are reported for the two title compounds (8 and 9), of which the former crystallized in two modifications (8n and 8b). In all three structures, the pyranose rings have the %, (D) conformation and the substituents at C-l are axial and those at C-24-4 are equatorial. Th