Synthesis, crystal structure, and characterization of new tetranuclear Ag(I) complexes with triazole bridges

Ying Wang, Long Yi, Xing Yang, Bin Ding, Peng Cheng, Dai Zheng Liao, Shi Ping Yan

Research output: Contribution to journalArticle

Abstract

The self-assembly of Ag(I) ions with 3,5-dimethyl-4-amino-1,2,4-triazole (L1) and 4-salicylideneamino-1,2,4-triazole (L2) gave two novel complexes, [Ag42-L1) 6][Ag42-L1)6(CH 3CN)2](ClO4)8·2H 2O (1) and [Ag42-L2) 6(CH3CN)2](AsF6)4· 2H2O (2), both of which contain tetranuclearic clusters constructed via Ag(I) ions and six N1,N2-bridged triazoles with a Ag4N 12 core. When 4-(6-amino-2-pyridyl)-1,2,4-triazole (L3) was employed, {[Ag42-L3) 43-L3)2](CF3SO 3)4· H2O}n (3), {[Ag 42-L3)43-L 3)2](ClO4)4}n (4), and {[Ag42-L3)23- L3)4](PF6)4·CH 3CN·0.75H2O}n (5) were isolated. 3 and 4 are 1D polymers, while 5 is a 2D polymer. 1D and 2D coordination polymers are constructed via the self-assembly of Ag4N12 cores as secondary building units (SBUs). The connection of these SBUs can be represented as a ladderlike structure for 1D polymers and a 4.82 net for 2D polymers. Electrospray ionization mass spectrometry measurements and NMR ( 1H and 13C) studies demonstrate that the tetranuclear SBU retains its integrity and the coordination polymers decompose into the tetranuclear Ag4N12 core in solution. 2 exhibits blue emission in the solid state and green emission in solution at ambient temperature. Strong blue fluorescence for complexes 3-5 in the solid state can be assigned to the intraligand fluorescent emission.

Original languageEnglish (US)
Pages (from-to)5822-5829
Number of pages8
JournalInorganic Chemistry
Volume45
Issue number15
DOIs
StatePublished - Jul 24 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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