A Binuclear Cadmium(II) Cluster Based on π···π Stacking and Halogen···Halogen Interactions: Synthesis, Crystal Analysis and Fluorescent Properties

  • Jun-Xia LiEmail author
  • Zhong-Xiang Du
Original Paper


An interseting binuclear complex [Cd2(tcpa)4(bipy)2] (1) has been hydrothermally synthesized with 3, 5, 6-trichloropyridine phenoxy acetatic acid (Htcpa) and 2, 2-bipyridine (bipy) coligands. The X-ray single-crystal diffraction analysis shows that the CdII center is situated on unusual triangular prismatic geometry formed by two pyridyl nitrogen atoms of a bipy molecule and four carboxyl oxygen atoms of four different tcpa ligands. The four tcpa anions play as bis-monodentate linkers and connect two CdII ions together to form the dimer structure of 1. 1 is further assembled into a 2D layer by the co-effects of π···π stacking and Cl···Cl halogen bonds interactions. Moreover, 1 exhibits intense solid-state luminescence emissions centered at 442 nm at room temperature, which mainly originates from the intraligand π → π* transitions of tcpa. The CCDC number of 1 is 1,935,091.


Binuclear cadmium complex 3, 5, 6-trichloropyridine phenoxy acetatic acid 2, 2- bipyridine Crystal structure Fluorescence 



This work was supported by the Key scientific research projects in Colleges and Universities of Henan province (No. 17A150040), the Foundation for Science and Technology Innovation Talents in Henan province (No. 164100510012), Natural Science Foundation of China (Nos. 21671114 and U1804131) as well as the Tackle Key Problem of Science and Technology Project of Henan Province, China (no. 182102310897).


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Authors and Affiliations

  1. 1.Henan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical EngineeringLuoyang Normal UniversityLuoyangPeople’s Republic of China
  2. 2.College of Foods and DrugsLuoyang Normal UniversityLuoyangPeople’s Republic of China

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