Linking 1D Transition-Metal Coordination Polymers and Different Inorganic Boron Oxides To Construct a Series of 3D Inorganic–Organic Hybrid Borates
2018
Three inorganic–organic hybrid borates, M(1,4-dab)[B5O7(OH)3] [M = Zn (1), Cd (2), 1,4-dab = 1,4-diaminobutane)] and Co(1,3-dap)[B4O7] (3, 1,3-dap = 1,3-diaminopropane), which integrated characteristics of 1D coordination polymers and 1D/3D inorganic boron oxides have been obtained under solvothermal conditions. Compounds 1 and 2 are isostructural and crystallize in a centrosymmetric space group P21/c; the 3D achiral structures of 1 and 2 consist of the nonhelical Zn/Cd-1,4-dap coordination polymers and 1D B–O chains. Compound 3 crystallizes in a chiral space group P43212; the helical Co-1,3-dap coordination polymer chains are entrained within a 3D B–O network and finally form the chiral framework. Compounds 1–3 represent good examples of using coordination polymers to construct mixed-motif inorganic–organic hybrid borates. Compounds 1 and 2 display blue luminescence when excited with UV light.
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