A Co(II) 3,5-Diaminobenzoate Coordination Polymer

1 INTRODUCTION The researches in design and construction of novel inorganic-organic hybrid coordination poly- mers based on covalent interactions have drawn great attention in recent years and developed rapidly not only due to their fascinating structures1, 2] but also to their potential applications in functional ma- terials3, 4]. The design of coordination polymers is greatly influenced by the coordination nature of metal ions, structural characteristics of the polyden- tate organic li…

A Co(II) 3,5-Diaminobenzoate Coordination Polymer

The title compound, Co(C7N2H7O2)2]n?nH2O 1, was synthesized via the hydrother- mal reaction of Co(OAc)2 with 3,5-diaminobenzoic acid and characterized by elemental analysis and infrared spectra. The crystal crystallizes in the monoclinic system, space group P21/c with a = 7.456(3), b = 9.972(3), c = 10.391(3) ?, β = 106.435(2)o, V = 741.0(4) ?3, Z = 2, C14H16CoN4O5, Mr = 379.24, Dc = 1.700 g/cm3, F(000) = 390 and μ(MoKα) = 1.194 mm-1. The final R = 0.0324 and wR = 0.0886 for 1516 observed reflections with I > 2σ(I) and R = 0.0337 and wR = 0.0899 for all data. X-ray diffraction studies reveal that the title compound has an interesting 3D microporous architecture with guest water molecules inside the channel. Each Co atom, adopting a distorted octahedral geometry, is coordinated by two O atoms from two 3,5-diaminobenzoate ligands and four N atoms from four symmetry-related 3,5-diaminobenzoate ligands.