“… zinc acetate dihydrate … benzene-1,4-dicarboxylic acid (H(2)BDC) and benzene-1,3,5-tricarboxylic acid (H(3)BTC) in a solution containing N,N'-dimethylformamide (DMF), … gave rise to a metal-organic polymer, Zn(3).BDC.2BTC.2NH(CH(3))(2).2NH(2)(CH(3))(2).”