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The reactions of 1,3,5-benzenetricarbocylic acid(H3BTC) and 1,3,5-benzenetrisbenzoic acid(H3BTB) with Dy(NO3)3·6H2O afford two novel Dy(III) coordination polymers respectively, Dy(BTC)(H_2O)DMF(1) and [Dy(BTB)(Et OH)](DMF)(2)(DMF = N,N-dimethylformam