IR study of dickite-formamide intercalate, Al2Si2O5(OH)(4)-H2NCOH

Authors
Zamama, M Knidiri, M
Citation
M. Zamama et M. Knidiri, IR study of dickite-formamide intercalate, Al2Si2O5(OH)(4)-H2NCOH, SPECT ACT A, 56(6), 2000, pp. 1139-1147
Citations number
33
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
ISSN journal
13861425 → ACNP
Volume
56
Issue
6
Year of publication
2000
Pages
1139 - 1147
Database
ISI
SICI code
1386-1425(200005)56:6<1139:ISODIA>2.0.ZU;2-6
Abstract
Direct intercalation of formamide (FAM) in dickite occurs spontaneously whe n samples are treated by ultrason. The X-ray diffraction patterns show that this intercalation increases the d(001) spacing from 7.19 to 10.77 Angstro m. It is concluded from infrared studies that hydrogen bonds are formed bet ween C=O groups of formamide and inner surface hydroxyls of dickite, indica ted by the shift of the hydroxyl bands from 3708, 3654 cm(-1) and 3622 for natural dickite to 3575, 3520, 3450 and 3612 cm(-1) for FAM-intercalated di ckite. (C) 2000 Elsevier Science B.V. All rights reserved.