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- Title
Effect of Coordination Modes on the Tunable Luminescence of 1,10‐Phenanthroline‐Based Complexes.
- Authors
Zhang, Hong‐Rui; Jin, Xin‐Xin; Zhou, Xin; Zhang, Yunxia; Leung, Chi‐Fai; Xiang, Jing
- Abstract
Two luminescent compounds [Zn(L)2](ClO4)2 (1) and [Na(L)(MeOH)(μ‐ClO4)]n (2) are obtained from the reactions of 2,9‐bis(carbomethoxy)‐1,10‐phenanthroline (L) with corresponding hydrated perchlorate salts in MeOH. Their crystal structures are determined by X‐ray crystallography. 1 is a mononuclear 8‐coordinate Zn2+ compound and 2 is a ClO4−‐bridged 1D polymer, where the ligand L exhibits different coordination modes (carbonyl O vs methoxyl O coordination). Although the luminescence of these two compounds originates similarly from the ligand‐centered π→π* transitions, it is interesting to note that their emissions are significantly influenced by the different coordination modes of L. The relationship between their structures and emission properties has been investigated in detail. The stability and energy difference between these two coordination modes in these two compounds are analyzed by Time‐dependent density functional theory (TD‐DFT) calculations. Two luminescent compounds [Zn(L)2](ClO4)2 (1) and [Na(L)(MeOH)(μ‐ClO4)]n (2) are obtained from the reactions of 2,9‐bis(carbomethoxy)‐1,10‐phenanthroline (L) with corresponding hydrated perchlorate salts in MeOH. Crystal structures show that two different coordination modes of L are present (carbonyl O vs methoxyl O coordination), which play a significantly influence on their luminescence.
- Subjects
LUMINESCENCE; PHENANTHROLINE; COMPLEX compounds; ZINC compounds; CHEMICAL reactions; CRYSTAL structure
- Publication
Crystal Research & Technology, 2019, Vol 54, Issue 1, pN.PAG
- ISSN
0232-1300
- Publication type
Article
- DOI
10.1002/crat.201800168