| Summary: | 碩士 === 國立中央大學 === 化學研究所 === 94 === Abstract
The self-assembly of Ni2+, Co2+ or Cu2+ ions with pyridine and carboxylate mixed ligands under hydrothermal conditions afforded a series of coordination polymers. The solid state structures of the products were characterized by single-crystal X-ray diffraction analyses.
Treatment Ni2+ or Co2+ ions with mixed ligands of 2,6-naphthalenedicarboxylic acid (2,6-H2ndc) and 4,4’-bipyridine (4,4’-bpy) or trans-1,2-bis(4-prydyl)-ethylene (bpe) under hydrothermal conditions gave compounds [{Ni(2,6-ndc)(4,4’-bpy)1/2}]n (1)、 [{Co(2,6-ndc)(4,4’-bpy)1/2}]n (2)、 [{Ni (2,6-ndc)(bpe)H2O}]n (3) and [{Co2(2,6-ndc)2(bpe)}3．H2O]n (4), respectively. Single-crystal X-ray diffraction analyses reveals that compound 1 and 2 are isostructures with interpenetrated architectures. Reaction of Ni2+ ion with benzene-1,3,5-tricarboxylic acid (1,3,5-H3btc) and 4,4’-dipyridylpiperazine (2N-DPyP) via hydrothermal method produced compounds [{Ni(1,3,5btc)(2N-DPyPH)(2N-DPyP)1/2(H2O)}•H2O]n (6) and [{Ni3(1,3,5-btc)2(2N-DPyP)3(H2O)2}•2H2O]n (7). Under similar reactions, Cu2+ reacted with 1,3,5-H3btc and 2N-DPyP to form [{Cu(1,3,5-btc)}(2N-DPyPH2)1/2•2H2O]n (5). However, the yield of compounds 6 and 7 could be tuned by changing the pH value and the metal to ligand ratio in the solution.
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