The crystal structure of 6I-(6-aminohexyl) amino-6I-deoxycyclomaltoheptaose
β Scribed by Dimitris Mentzafos; Aris Terzis; Antony W. Coleman; Colette de Rango
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 484 KB
- Volume
- 282
- Category
- Article
- ISSN
- 0008-6215
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β¦ Synopsis
The monosubstituted cyclomaltoheptaose derivative, 6I-(6-aminohexyl)amino-6X-deoxycyclomaltoheptaose, crystallizes in the orthorhombic space group P 212121 with a = 32.513(2), b = 15.3871(9), c = 15.2645(9) ,~, V = 7636.6(8) ,~3 and Z = 4. The macrocycles are spirally aligned along the twofold screw axis parallel to the c crystal axis forming polymeric-like columns. The 6-aminohexyl chain enters the cavity of an adjacent cyclomaltoheptaose moiety in the column from the secondary side and its extremity protrudes from the primary side of the latter. All the atoms of the chain exhibit high thermal motion.
π SIMILAR VOLUMES
Nylon 6 and 6.6 fibers were submitted to thermal annealing in a wide range of temperatures (below and above their glass transition temperatures) under inert atmosphere and slack condition, allowing free shrinkage. The structural changes due to the heat settings were analyzed by several techniques (d
61,6tLDiamino-6~,6U-dideoxy-cyclomaltoheptaose was prepared using the regioselective procedure described by Tabushi. The difunctionalized fl-cyclodextrin crystallizes as hexadecahydrate in the orthorhombic space group P2~2121, with a = 11.395(3), b = 32.989(9), c = 17.560(5) ,~, V= 6601 43, Z= 4. Th