Structural Diversity, Supramolecular Assembly, and Electronic Spectra of Four Silver Coordination Polymers with Same Components of 2-Nitro-1,4-benzenedicarboxylate and 4,4′-Bipyridine

作者：Ma Ai-Qing; Zhu Long-Guan^*

来源：Chinese Journal of Inorganic Chemistry, 2015, 31(8): 1651-1660.

DOI：10.11862/CJIC.2015.227

• coordination modes
• structure elucidation
• silver coordination compound
• nitrobenzenedicarboxylate

Four diverse silver coordination polymers with the same components of silver, 4,4'-bipyridine(4,4'-bipy), and 2-nitro-1,4-benzenedicarboxylic acid (2-H(2)nbdc) have been synthesized, namely {[Ag(4,4'-bipy)]center dot 2-Hnbdc center dot 2H(2)O center dot CH3OH}(n) (1), {[Ag(4,4'-bipy)(2)(2-Hnbdc)]}(n) (2), {[Ag-2(4,4'-bipy)(2)(2-nbdc)]center dot 2H(2)O}(n) (3), and {[Ag-2(4,4'-bipy)(2)(2-nbdc)(H2O)]center dot 2H(2)O}(n) (4), and characterized by IR, elemental analysis, TG, UV, fluorescence spectra, and powder X-ray analysis. The single crystal X-ray analysis showed that complex 1 is a 1D cation-anionic polymer, complex 2 is a 1D double chain without any solvent, and complexes 3 and 4 are 1D chain structures. Diverse structures differ with respect to molecular conformation, coordination modes of 2-Hnbdc, and weak interactions. In these complexes there are weak bonds, pi-pi aromatic stacking interactions, Ag center dot center dot center dot Ag interaction, and hydrogen bonding. The diverse structures are related to the thermal stability, UV absorptions, and fluorescence emissions. CCDC: 945166, 1; 945167, 2; 945168, 3; 945169, 4.

• 出版日期2015-8-10
• 单位广东医科大学; 浙江大学