Anion-directed assembly and crystal transformation of Ag(I) coordination polymers with a versatile tripyridyltriazole ligand 3,4-bis(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole

作者：Li Cheng Peng; Chen Jing; Guo Wei; Du Miao^*

来源：Journal of Solid State Chemistry, 2015, 223: 95-103.

DOI：10.1016/j.jssc.2014.06.038

• Coordination polymer
• Anion effect
• Single-crystal-to-single-crystal transformation
• Tripyridyltriazole ligand
• Fluorescence

A series of distinct Ag(I) coordination polymers, namely {[Ag-2(L-224)(H2O)(3)](SiF6)(H2O)(4)}(n) (1), {[Ag-2(L-224)(2)(NO3)] (NO3)(H2O)) (3), {[Ag-2(L-224)(OOCC6H5)(H2O)](NO3)(H2O)(2)}(n) (4), and {[Ag(L-224)(2)](CF3SO3)(H2O)(0.25)}(n) (5) have been synthesized by assembling a versatile ligand 3,4-bis(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole (L-224) with different Ag(I) salts. Their diverse 1D and 2D coordination arrays indicate the critical role of counterions in structural assemblies. Interestingly, single-crystal-to-single-crystal (SC-SC) transformation from 1 to {[Ag-2(L-224) (CF3COO)(2)(H2O)](H2O)}(n), (2) will occur in the water solution of Ag(CF3COO). Structural comparison and mechanism of SC-SC transformation are discussed. These Ag(I) coordination polymers show enhanced ligand-based solid-state fluorescent emissions.

• 出版日期2015-3
• 单位天津师范大学