Journal
INORGANICA CHIMICA ACTA
Volume 361, Issue 14-15, Pages 4038-4046Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2008.03.049
Keywords
cryptate complexes; anion recognition; spectrophotometric titrations; charge transfer transitions; colorimetric anion sensors
Categories
Funding
- Italian Ministry of University (FIRB) [RBNE019H9K]
Ask authors/readers for more resources
The inclusion of halide ions into a dicopper(II) bistren cryptate complex containing 2,5-dimethylfuran spacers has been investigated through spectrophotometric titration experiments in MeCN solution. X-ray diffraction studies on the 1: 1 chloride inclusion complex have shown that the encapsulated halide ion and the furan oxygen atoms lie at an interacting distance. Such an interaction perturbs the energy of the halide-to-copper(II) charge transfer transition, which is shifted to the visible region. As a consequence, an intense yellow colour develops on halide inclusion. Such a colour change is not observed on chloride or bromide inclusion into the dicopper(II) bistren cryptate containing spacers which are not capable to interact with the encapsulated halide and do not perturb the charge transfer transition, e. g. 1,3-xylyl fragments. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available