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Construction of Cd(II) compounds with a chelating ligand 2,2′-dipyridiylamine (Hdpa): Anion effect, catalytic activities and luminescence

Title
Construction of Cd(II) compounds with a chelating ligand 2,2′-dipyridiylamine (Hdpa): Anion effect, catalytic activities and luminescence
Authors
Park B.K.Eom G.H.Kim S.H.Kwak H.Yoo S.M.Lee Y.J.Kim C.Kim S.-J.Kim Y.
Ewha Authors
김성진김영미
SCOPUS Author ID
김성진scopus; 김영미scopus
Issue Date
2010
Journal Title
Polyhedron
ISSN
0277-5387JCR Link
Citation
vol. 29, no. 2, pp. 773 - 786
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Six new structures of Cd(II) complexes containing Hdpa ligands have been determined. With chloride and bromide, Cd(II) ions produce halide-bridged dinuclear units 1 and 2 while CdI2 produces mononuclear unit 3 without halide-bridging. Cd(II) ions produce mono-Hdpa complex 4 with chelating benzoate, di-Hdpa complex 5 with coordinating NO3 - anion, and tri-Hdpa complexes 6 and 7 with non-coordinating ClO4 - and BF4 - anions. One-, two-, or three-dimensional structures of Cd(II)-Hdpa complexes can be produced by hydrogen bonding interactions and π-π interactions. The compounds 4, 5, and 6 catalyzed efficiently the transesterification of a variety of esters with methanol, while 1, 2, 3 and 7 have displayed a very slow conversion. The transesterification reactivity shown by the catalyst 6 is very efficient and the best among the compounds 1-7. In addition, all compounds 1-7 and ligand (Hdpa) have shown the similar luminescent properties at λmax = 352 nm which suggest that their emissions seem to be attributed to the π-π* intraligand fluorescence. © 2009 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.poly.2009.10.024
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자연과학대학 > 화학·나노과학전공 > Journal papers
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