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Volumn 34, Issue 13-14, 1995, Pages 1452-1453

Rapid Water Diffusion in a Cage‐Type Crystal Lattice: β‐Cyclodextrin Dodecahydrate

Author keywords

cyclodextrins; diffusion; H D exchange; Raman spectroscopy; solid state structures

Indexed keywords

EID: 33748608175 PISSN: 05700833 EISSN: 15213773 Source Type: Journal
DOI: 10.1002/anie.199514521 Document Type: Article

Times cited : (40)

References (21)

3
- 0000222105
- (1994) J. Am. Chem. Soc. , vol.116 , pp. 5122-5128
- Steiner, T.¹ Koellner, G.²

6
- 0000850038
- Dynamics of orientationally disordered hydrogen bonds and of water molecules in a molecular cage
- (1991) Molecular Physics , vol.72 , pp. 1211-1232
- Steiner, T.¹ Saenger, W.² Lechner, R.E.³

7
- 0024975005
- (1989) J. Mol. Biol. , vol.208 , pp. 669-678
- Usha, M.G.¹ Wittebort, R.J.²

8
- 0026603880
- 1541–1548.
- (1992) J. Am. Chem. Soc. , vol.114
- Usha, M.G.¹ Wittebort, R.J.²

9
- 84989540669
- 2O molecules in neighboring crystal asymmetric units are sterically isolated from each other [3]. The β‐CD molecule carries 21 OH groups, of which only five have an ordered H position. The other 16 exhibit dynamic orientational disorder (“flip‐flop” disorder [2]). Of these 16 disordered OH groups, four are hydrogen‐bonded only to other OH groups and are consequently not directly accessible to water molecules.

10
- 0022462521
- 2O per β‐CD at 15% humidity. This affects the water molecules enclosed in the β‐CD cavity to a larger extent than those in interstitial sites. Commercially available β‐CD hydrate has similar water content (if hydrated at humid atmosphere). Complete dehydration (for example in a desiccator) leads to collapse of the crystalline structure. The obtained substance fully re‐hydrates at humid atmosphere; in the X‐ray beam it shows a diffuse diffraction pattern indicating some residual crystalline order
- (1986) Chem. Pharm. Bull. , vol.34 , pp. 2178-2182
- Nakai, Y.¹ Yamamoto, K.² Terada, K.³ Kajiyama, A.⁴ Sasaki, I.⁵

13
- 84989540656
- −1. Samples sealed in capillary tubes with 0.8 mm inner diameter.

14
- 0001391872
- (1990) Vibrational Spectroscopy , vol.1 , pp. 225-227
- Egyed, O.¹

15
- 84989507945
- −1) for 930 min is compatible with less than 1.0 H(O) atom per β‐CD.

17
- 84989507939
- 16O cannot be avoided. Background intensity from contamination with atmospheric water in the sample crucible and in the spectrometer also cannot be completely avoided.

18
- 84989576332
- 18O ratios in the water reservoir and in the sample were barely different, the exchange in the sample is actually better than 90%.

19
- 84989548398
- This means that a given water molecule on the average performs many diffusion jumps between two H‐(or D)‐transfer processes. The distance walked between two such processes is therefore large compared to the jump distance. However, this distance need not be “macroscopic”: it is assumed that during its journey from the surface to the interior of the crystal, a water molecule experiences many H‐(or D)‐transfer processes.

20
- 33846094560
- (1974) J. Am. Chem. Soc. , vol.96 , pp. 3630-3639
- Manor, P.C.¹ Saenger, W.²

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.