Abstract
Four CdII-(e,a-cis-1,2-chdc) complexes, [Cd(H 2O)(1,2-chdc)(2,2′-bpy)] 1, [Cd(1,2-chdc)(bpe)]n 2, [Cd2(1,2-chdc)(4,4′-bpy)2]n 3A, and [Cd(H2O)(1,2-chdc)(4,4′-bpy)2]n· 3n(H2O) 3B (1,2-chdc = 1,2-cyclohexanedicarboxylate), with different assistant ligands (2,2′-bipyridine (2,2′-bpy), 1,2-bis(4-pyridyl) ethene (bpe), and 4,4′-bipyridine (4,4′-bpy)) have been synthesized and their structures were determined. Depending on the assistant ligands, the structures and dimensionalities of CdII-(e,a-cis-1,2-chdc) complexes have been varied. Two carboxylates in e,a-cis-1,2-chdc coordinate to Cd II ions in chelating (η1:η1), bridging (η1:η1:μ2), and chelating/bridging (η2:η1:μ2) modes. Photoluminescence study of the compounds 1 and 2 showed that emission spectrum of compound 1 was observed at 348 nm, while relatively weak luminescence was displayed at 516 nm for 2. The thermal stabilities of these complexes were also examined.
Original language | English |
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Pages (from-to) | 335-342 |
Number of pages | 8 |
Journal | Journal of Molecular Structure |
Volume | 994 |
Issue number | 1-3 |
DOIs | |
State | Published - 17 May 2011 |
Bibliographical note
Funding Information:Financial support from the Korean Science & Engineering Foundation (R01-2008-000-20704-0 and 2009-0074066), the Converging Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0082832), and the SRC program of the Korea Science and Engineering Foundation (KOSEF) through the Center for Intelligent Nano-Bio Materials at Ewha Womans University ( Grant R11-2005-008-00000-0 ) is gratefully acknowledged.
Keywords
- 1,2-Cyclohexanedicarboxylate
- Bipyridyl ligands
- Cd complexes
- Coordination polymers
- Photoluminescence