|
|||||
|
|
Three green luminescent cadmium complexes containing 8-aminoquinoline ligands: Syntheses, crystal structures, emission spectra and DFT calculations |
|
| Authors: | Heng Xu Li-Min Guo Xiao-Ming Ren You Song |
| Institution: | a Anhui Key Laboratory for Functional Coordination Compounds, Anqing Normal College, Anqing 246011, PR China b Department of Applied Chemistry, Science College, Nanjing University of Technology, 5 Xin Mo Fan Road, Nanjing 210009, PR China c Coordination Chemistry Institute & State Key Laboratory, Nanjing University, Nanjing 210093, PR China d School of Chemistry & Bio21 Institute, The University of Melbourne, Parkville, VIC 3010, Australia |
| Abstract: | Three complexes, Cd(8-aminoql)2×2 (8-aminoql=8-aminoquinoline; X−=ClO4−, SCN−, 1 and 2, respectively) and Cd(8-aminoql)(N3)2 (3), were synthesized and structurally characterized. For each complex, the Cd2+ ion exhibits distorted octahedral coordination geometry. Two 8-aminoquinoline molecules and two counter-anions are coordinated to the Cd2+ center to form a mononuclear species with two trans-ClO4− anions for 1, while two SCN− anions adopt a cis-configuration for 2. The intermolecular H-bonding interactions between the -NH2 groups and the O atom (1) and the S atom (2) result in the formation of a 2-D layered structure. In the crystal of 3, the N3− anions bridging the neighboring Cd(8-aminoql)2+ units form a 1-D coordination polymer. The three complexes emit green luminescence. The emission bands possess a broad asymmetric feature, which can be assigned to L′LCT transitions based on DFT and TDDFT calculations. |
| Keywords: | Cadmium complex Crystal structure Luminescence DFT calculation |
| 本文献已被 ScienceDirect 等数据库收录！ | |