名称:
Cobalt(II) coordination polymers based on dicarboxylates and dipyridyl-type ligands: [CoL1.5(NO3)2], [Co1.5(bpdc)1.5(dma)]·(dma)·(EtOH), [Co1.5(ndc)1.5(dma)2], [Co3(ndc)3(dmf)4], and [CoL(bpdc)]·(EtOH) (bpdcH2=biphenyl-4,4′-dicarboxylic acid, ndcH2=2,6-naphthalene dicarboxylic acid, L=pyCHNC10H6NCHpy)
摘要:
Under solvothermal conditions, a 1-D ladder polymer [CoL1.5(NO3)(2)] (1) was prepared from Co(NO3)(2)center dot 6H(2)O and a dipyridyl-type ligand. N,N '-bis-pyridin-4-ylmethylene-naphthalene-1,5-diamine (L) in methanol. Co(NO3)(2)center dot 6H(2)O reacted with dicarboxylic acids such as biphenvl-4,4 '-dicarboxylic acid (bpdcH(2)) and 2,6-naphthalene dicarboxylic acid (ndcH(2)) in dma-ethanol to produce 3-D polymers, [Co-1.5(bpdc)(1.5)(dma)]center dot(dma)-(EtOH) (2) and [Co-1.5(ndc)(1.5)(dma)(2)] (3), respectively. In dmf-ethanol, another 3-D polymer [Co-3(ndc)(3)(dmf)(4)] (4) was prepared from Co(NO3)(2)center dot 6H(2)O and ndcH(2). Finally, a 3-D polymer [CoL(bpdc)]-(EtOH) (5), whose framework is made up of bpdc(2-) and L, could be prepared. All polymers were structurally characterized by X-ray diffraction. Polymers 2 and 5 p contain guest molecules in their frameworks. (C) 2006 Elsevier B.V. All rights reserved.