Four Zn/Pb Complexes based on Pyridine containing Mercapto‐triazole Ligand: Syntheses, Structures, and Luminescent Properties

摘要

> A series of transition metal coordination complexes, [Zn ₃ (2‐aptt) ₂ (1,4‐bdc) ₂ ] _n ( 1 ), [Zn ₄ (2‐aptt) ₄ (H ₂ pma) ₂ (H ₂ O) ₄ ] _n ( 2 ), [Zn ₂ (2‐aptt) ₂ (3‐pc) ₂ (H ₂ O) ₄ ] ( 3 ), and [Pb(2‐ptt)] _n ( 4 ) were synthesized under solvothermal conditions using the pyridine containing mercapto‐triazole ligand 2‐apttH [4‐amino‐3‐(2‐pyridyl)‐1H‐1,2,4‐triazole‐5‐thione] as a main building block. Their structures were determined by single‐crystal X‐ray diffraction analyses and further characterized by elemental analyses and IR spectroscopy. Notably, desamination reaction exists in the formation of complex 4 , in which the ligand 2‐apttH deaminated to generate the ligand 2‐pttH ₂ [3‐(2‐pyridyl)‐1H‐1,2,4‐triazole‐5‐thione]. The four complexes exhibit structural diversity: complex 1 presents an interesting 3D framework, complexes 2 and 4 feature 2D networks, whereas complex 3 shows dinuclear structure. Moreover, the luminescent properties of complexes 1 – 4 , the first and second ligands were also studied.