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The dual ligand system of V-shaped 5-(4-carboxy-2-nitrophenoxy)-isophthalic acid(Hcn-H2ipa) and dipyridy-type molecules produces two new coordination polymers: {[Ni(cn-Hipa)(bpa)(H2O)3]·1.5H2O}n 1 and {[Cu(Hcn-ipa)(ppe)2]}n 2(bpa = 1,2-bis(4-pyridyl)