Citation: Xuebin XU, Jie CHEN, Gaofeng WANG, Shaofei SONG. Crystal structures and luminescent properties of two isostructural Zn(Ⅱ) complexes constructed from L-tert-leucine Schiff bases ligands[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(6): 1312-1320. doi: 10.11862/CJIC.20250354 shu

Crystal structures and luminescent properties of two isostructural Zn(Ⅱ) complexes constructed from L-tert-leucine Schiff bases ligands

1.
Department of Applied Chemistry, Yuncheng University, Yuncheng, Shanxi 044000, China
2.
Science Experiment Center, Yuncheng University, Yuncheng, Shanxi 044000, China

Corresponding author: Xuebin XU, xu_xuebin@163.com
Received Date: 26 November 2025
Revised Date: 13 April 2026

Figures(10)

Two isostructural coordination polymers [Zn(L)(HCOO)]_n (Zn-L_For) and [Zn(L)Cl]_n (Zn-L_Cl) were synthesized by a hydrothermal method based on HL·NaX (HL=2-{[(pyridin-4-yl)methyl]amino}-3, 3-dimethylbutanoic acid, X^-=HCOO^-, Cl^-). Zn-L_For and Zn-L_Cl belong to the orthorhombic system with space group P2₁2₁2₁, which exhibit distorted square pyramidal structures. Interestingly, the values of the trigonality factor (τ₅) are distinctively different. Zn-L_Cl has a τ₅ value of 0.144, while the value of τ₅ for Zn-L_For is only 0.089. Zn-L_For displayed an excellent fluorescence property, which can be used as a fluorescence probe to detect Cr₂O₇^2- in H₂O solution with high selectivity and sensitivity, with a quenching constant (K_SV) of 2.23×10⁴ L·mol^-1. The detection limit of Cr₂O₇^2- was calculated from the experimental data, and the value was 1.03 μmol·L^-1.
- Schiff bases,
- coordination polymer,
- Cr₂O₇^2-,
- luminescent property
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