5 c shows a ball and stick representation of the crystal structure of the metal based one dimensional coordination polymer of the chemical formula co c 15 h 9 o 2 4 c 3 h 7 o 2 n highlighting the coordination bonds between the ligand and metal ion and between the isopropanol solvent and the metal ion the distance between cobalt ions co u2014 co comprising the metal based one dimensional coordination polymer was measured as 3 482 u00e5 and 5 169 u00e5 fig5 d shows a packing diagram of the crystal structure of co c 15 h 9 o 2 4 c 3 h 7 o 2 n as viewed down the crystallographic b axis the crystal structure crystallises in the monoclinic non centrosymmetric space group p2 1 there is provided that metal based one dimensional coordination polymer of the chemical formula co c 15 h 9 o 2 4 c 3 h 7 o 2 n where n is any integer 1 to infinity the metal is co 2 and the ligand is anthracene 2 carboxylic acid may crystallize in other space groups and comprise polymorphs of the structure p2 1 fig6 shows the coordination environment of structure iii partly in a space filling representation and partly in a ball and stick representation to indicate that the co 2 ions at closer than the sum of their van der waals radii facilitating magnetic electronic and or optical.