The title complex, [Co(suc)(L)]n 1 (L = 2-phenyl-1H-1,3,7,8-tetraazacyclopenta- [l]phenanthrene and H2suc = succinic acid) has been hydrothermally obtained and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. It crystallizes in orthorhombic, space group Pcca with a = 13.936(3), b = 9.918(2), c = 28.670(6) (A), V = 3962.4(14) A()3, Z = 8, CoC23H16N4O4, Mr = 471.33, Dc = 1.580 g/cm3, F(000) = 1928, μ(MoKa) = 0.907 mm(1, R = 0.0543 and wR = 0.1336. Compound 1 exhibits one-dimensional chain structures which are further stacked by π-π interactions to give a supramolecular layer. Finally, the N-H…O hydrogen bonds between the nitrogen atom of L and carboxylate oxygen atom stabilize the structure of 1.
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