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2009 | 116 | 1 | 81-83
Article title

Intercalation of Layered Metal Iodides with Pyridine Evidenced by Raman Spectroscopy

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EN
Abstracts
EN
PbI_2, BiI_3, CdI_2 and AgI crystalline samples intercalated with pyridine have been studied by Raman spectroscopy. Comparing the Raman spectra of pristine metal iodides with those of intercalated samples we have shown the coexistence, in the host crystalline lattice, of two adsorbed forms: a physisorbed one, featured by weak forces of van der Waals type and a chemisorbed one, involving stronger forces related to an electrostatic interaction. The physisorbed form is consistent with the molecules inserted into the interlayer spaces while the chemisorbed form is represented by the molecules forming coordination complexes with the crystalline lattice cations. The crucial role in the formation of such complexes is played by the lone pair of nitrogen atom belonging to the molecules.
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EN
Contributors
author
  • National Institute of Materials Physics, Lab. of Optics and Spectroscopy, P.O. Box MG-7, R-77125, Bucharest, Romania
author
  • National Institute of Materials Physics, Lab. of Optics and Spectroscopy, P.O. Box MG-7, R-77125, Bucharest, Romania
author
  • National Institute of Materials Physics, Lab. of Optics and Spectroscopy, P.O. Box MG-7, R-77125, Bucharest, Romania
author
  • National Institute of Materials Physics, Lab. of Optics and Spectroscopy, P.O. Box MG-7, R-77125, Bucharest, Romania
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv116n118kz
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