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The self-assembly of a flexible bipyridyl ligand 2,2?-bis(4-pyridylmethyle- neoxy)-1,1?-biphenylene (4,4?-bpp) with cobalt(II) center gave rise to a one-dimensional chain complex [Co(μ-4,4?-bpp)2(SCN)2?H2O]n 1 which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in monoclinic, space group C2/c with unit cell parameters: a = 13.1888(13), b = 24.230(2), c = 15.4218(17) ?, β = 93.291(6)o, V = 4920.1(8) ?3, Z = 4, C50H42CoN6O5S2, Mr = 929.95, Dc = 1.255 g/cm3, F(000) = 1932 and μ(MoKα) = 0.484 mm-1. The final R and wR are 0.0691 and 0.1670 for 3746 observed reflections with I > 2σ(I). 1 possesses an infinite 1-D polymeric chain structure consisting of the repeated basic square units Co2(μ-4,4?-bpp)2, where the Co(II) center acts as the joint of the square ring. The Co(II) center is coordinated in a slightly distorted octahedral geometry with four nitrogen atoms from four different 4,4?-bpp ligands in the equatorial plane and two trans thiocyanate ligands occupying the axial positions, preventing the formation of an extended framework.
The self-assembly of a flexible bipyridyl ligand 2,2? -bis (4-pyridylmethyle neoxy) -1,1? -biphenylene (4,4? -bpp) with cobalt (II) center gives rise to a one- Chain complex [Co (μ-4,4? -bpp) 2 (SCN) 2? H2O] n1 which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in monoclinic, space group C2 / c with unit cell parameters: a = 13.1888 (13), b = 24.230 (2), c = 15.4218 (17) ?,? = 93.291 (6) o, V = 4920.1 (8)? 3, Z = 4, C50H42CoN6O5S2, Mr = 979.95, Dc = 1.255 g / cm3, F (000) = 1932 and μ (MoKα) = 0.484 mm-1. The final R and wR are 0.0691 and 0.1670 for 3746 observed reflections with I> 2σ (I). 1 possesses an infinite 1-D polymeric chain structure consisting of the repeated basic square units Co2 (μ-4,4? -bpp) 2 where where Co (II) center acts as the joint of the square ring. coordinated in a slightly distorted octahedral geometry with four nitrogen atoms from four different 4,4? -bpp ligands in the equatorial plane and two trans thiocyanate ligands occupying the axial positions, preventing the formation of an extended framework.