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Induced Circular Dichroism and Magnetic Circular Dichroism Spectra of Maleimide and Related Molecules
Author(s) -
Kawamura Masahiro,
Higashi Miwako
Publication year - 2003
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200390188
Subject(s) - chemistry , maleimide , circular dichroism , phthalimide , crystallography , dimer , spectral line , stereochemistry , organic chemistry , physics , astronomy
The induced circular dichroism (ICD) spectra of the inclusion complexes of maleimide, phthalimide, and naphthalene‐2,3‐dicarboximide with β ‐ or γ ‐cyclodextrin (CDx) have been measured. The structure of the CDx inclusion complexes are interpreted by the signs and shapes of ICD spectra compared with the results of PPP calculations. In maleimide and naphthalene‐2,3‐dicarboximide, the ICD spectra of the β ‐CDx inclusion complex are very similar to those of the γ ‐CDx inclusion complex in spite of the differences in dimensions between the cavity of β ‐CDx and that of γ ‐CDx. In phthalimide, the ICD spectra of the β ‐CDx inclusion complex are very different from those of the γ ‐CDx inclusion complex. The split‐type ICD bands at 220–235 nm show that the dimer of phthalimide is formed in the presence of β ‐CDx.