One dimensional chain nickel(II) coordination polymer has been synthesized with 2,4,6-trimethylbenzoic acid, 4,4'-bipyridine and nickel perchlorate anhydrous, and characterized in the solvent mixture of water and methyl-alcohol. Crystal data for this complex: monoclinic, space group C2/c, a=2.154 7 (7) nm, b=1.1319 (2) rim, c=1.6557(8) nm,beta=129.66(3)degrees, V=3.1087(19) nm(3), D-c=1.370 g center dot cm(-3), Z=4, F(000)=1360, final GooF=1.042, R-1= 0.034 4, wR(2)=0.078 7. The crystal structure shows that the nickel ion is coordinated with two nitrogen atoms of two 4,4'-bipyridine molecules ...