Mandal, Arkalekha ; Patel, Bhisma K. (2017) Molecular structures and fluorescence property of Zn(II), Cd(II) complexes of 3-pyridyl-5-aryl-(1 H )-1,2,4-triazoles Polyhedron, 132 . pp. 112-122. ISSN 0277-5387
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Official URL: https://www.sciencedirect.com/science/article/pii/...
Related URL: http://dx.doi.org/10.1016/j.poly.2017.04.040
Abstract
The reaction of two 3-pyridyl-5-aryl substituted 1,2,4-triazole ligands (trz-1 and trz-2) with M(NO3)2 and MCl2 (M = ZnII/CdII) afforded the metal complexes [Zn(trz-1)Cl2], [Cd(trz-1)2(NO3)2] and [MII(trz-2) 2](NO3)2•H2O (M = Zn, Cd). The reaction of Cd(NO3)2, trz-2 and NaNCS in a 1:1:1 M ratio resulted in the formation of the complex [Cd(trz-2) 2(NCS)2]. These complexes have been characterized by spectroscopic analyses and X-ray crystallography. The crystal structures of the complexes show the presence of classical as well as non-classical C–H⋯O, C–H⋯F and C–H⋯S hydrogen bonds, along with a strong π⋯π interaction between the triazole moieties. The complexes exhibit strong fluorescence emissions both in the solid state and in DMSO solution. Further, the intraligand charge transfer origin of the emission in these complexes has been confirmed by DFT and TD-DFT studies.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | 1,2,4-Triazole; Fluorescence; Non-classical Hydrogen Bond; Intraligand Charge Transfer; TD-DFT |
| ID Code: | 114020 |
| Deposited On: | 30 Apr 2018 12:23 |
| Last Modified: | 30 Apr 2018 12:23 |
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