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=2.1547(7) nm, b=1.131 9(2) nm, c=1.6557(8) nm, β=129.66(3)°, V=3.1087(19) nm 3, Dc=1.370 g·cm-3, Z=4, F(000)=1 360, final GooF=1.042, R1= 0.034 4, wR2=0.078 7. The crystal structure shows that the nickel ion is coordinated with two nitrogen atoms of two ...