62 research outputs found
Hemocompatible 3D Silver(I) Coordination Polymers: Synthesis, X‐ray Structure, Photo‐Catalytic and Antibacterial Activity
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Nature of halogen‐centered intermolecular interactions in crystal growth and design: Fluorine‐centered interactions in dimers in crystalline hexafluoropropylene as a prototype
No full textCrystal structure and absolute configuration of (+)546-[copy4Cl2]HDBT: An example of torsional isomerism
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Ortho versus a-Metalation of Ethyl Phenyl Sulfide by n-Butyllithium/N, N, N, N-Tetramethylethylenediamine: Synthesis, Reactivity, and Crystal Structures of (2-(Ethylthio)phenyl)- and (1-(Phenylthio)ethyl)lithium
No full textPara-halogenated benzaldehyde molecules included in cyclodextrins: a combined spectroscopic and thermal analysis
Get PDFThe inclusion complexes of 4-X-benzaldehyde guests (X = F, Cl, Br) in alpha-, beta-and gamma-cyclodextrins (alphaCD, betaCD and gammaCD) were prepared and characterized by means of thermogravimetry, differential scanning calorimetry (DSC) and vibrational spectroscopy. The stoichiometry of the inclusion complexes ranges from 2:1 to 1:2, depending on the cavity size of the host. Sensitive vibrational modes such as C-O and ring CH stretching modes were used to monitor the effects of the inclusion process and to assess the preferred inclusion geometry for each host-guest pair. On the whole, the spectral observations suggest that the small alphaCD cavity imposes important structural restrictions on the guest molecule, while the larger gammaCD cavity allows lsquoliquid-typersquo intermolecular contacts. Copyright © 2005 John Wiley & Sons, Ltd
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